Well, this is definitely an interesting subject! My girlfriend takes psychedelics with me on nearly every occasion, unless I happen to be tripping alone, which is rare (but not a bad thing, btw). I think psychedelics have the capacity to make your bond stronger, but also the capacity to destroy it.
One of my ex-girlfriends was a Mr. Mackey of sorts saying, "Drugs are bad, m'kay? Don't take drugs kids...if you take drugs than you are bad, m'kay? M'kay..." But after a while, she started smoking cigarettes and weed, possibly because I wore her down after some time with all the evidence that weed isn't as bad as society says...I don't know how cigs fit into that picture but we will leave it at that for now. Eventually, she got to the point where she let me grow some mushrooms and even took them with me every once in a while...but I always felt very distant from her in those states...not connected whatsoever.
So, one time I took 4g of shrooms a couple of hours before my ex got home from work, thinking they would have worn off in time. But alas, they did not and I was still speechlessly tripping when she came home in a rage. I'm telling you that being in an unexpected fight with someone you (used to) love while being emotionally vulnerable because of the mushrooms, was one of the most horrific trips I have ever encountered. She looked like the devil as she spat her hurtful words at me, all because I was tripping and hadn't taken the trash out yet.
She had a bad day at work and was putting it all on me. Sure, maybe I should have warned her that I was tripping, but perhaps she should have been a bit more sympathetic towards the wide eyed and terrified man she was yelling at. It still bounces around my head every now and again, "why don't you get it? why don't you fucking get it!?" she screamed this over and over at me. I just kept saying "I don't know, I'm sorry, stop yelling..." practically chanting it. I'm not trying to throw a pity party here or anything, hell it was years ago but the point is that from that moment on, I knew it wouldn't last and that our relationship was doomed. She didn't love me like she said she did. The psychedelics showed me that over time. We were stupid high school sweethearts who didn't know anything else besides the mess we were living in.
Funny thing is that she left because of the psychedelics and blamed them for changing me. So on the other side of the spectrum, I gave credit to the drugs for showing me what a heartless, selfish, and cruel person I was being smothered by.
So fast forward to the present and I am now with a wonderful girl who loves me unconditionally, and she loves the psychedelic experience as well. When I trip with her, I have no fears and it seems like our bond gets stronger each time. She is fascinated by mushrooms grows and DMT extractions, all of which she stands right by my side and watches with an eager smile, asking questions and learning right alongside me. I couldn't ask for anything more than that.
So maybe it isn't 100% the psychedelics that allow for us to be as close as we are, but it sure does help. During the comedown of strong mushroom trips, ya know, when speech returns, we always have deeply intimate conversations about love, life, the future, the past, and anything in between. As corny as it is, sometimes we take turns listening to each others heart beats, to show and remind us that we truly are alive, and it is something to be treasured. To be able to hold someone in your arms and experience the strange insights and voids gained from psychedelic explorations is deeply profound. I still have trouble putting it into words as I sit here typing a 20 page essay! :d
As others have mentioned already, it really does boil down to trust. The psychedelic experience is all about trust. Trusting in yourself to face your fears. Trusting in your partner to not only watch you go through the act of trusting yourself, but allowing them into that sacred space so that you can do the same for them. That sort of space can be confusing and scary and equally breathtaking and charming so letting someone into that, nay, sharing that is beyond words. I just can't seem to find the right vernacular for this...
All I know is that if you do have someone that means the world to you, and they enjoy tripping right alongside you...I say you better hold onto them for dear life because for me it has been the most meaningful time of my life. And I am only referencing the last 3 years that I have been with my wonderful lady...and if you read this babe, I love you!

(she isn't a member , but sometimes she lurks around the forum...hehe)
Anyway, I think I have rambled enough for now and have made my point to an extent.
peace
