I can’t finish in the presence of another person

I’m a 22 year old girl and have been dating my wonderful current boyfriend, who is 24, for about 11 months. I love our sex life honestly, piv, oral, hand stuff, he’s good at what he does and it’s very pleasurable to me, but the only problem is I absolutely cannot finish, nor have I been able to finish with any previous partner. I can get close, and I can enjoy it immensely, but I just can’t seem to get over the finish line. We’ve even tried mutual masturbation, and again I was able to get close, but I still couldn’t reach the end. The best I could do was masturbating to completion with my boyfriend standing on the other side of a closed door. It was a fun experiment but not quite as intimate as I would like it to be of course

If I had to guess, I think my main issue is that I’m too reliant on porn/toys when I’m on my own, paired with getting too much in my own head when I’m with a partner. I can’t seem to let go and be fully vulnerable to allow myself to finish, always psyching myself out at the last minute. All that paired with the fact I’m on antidepressants results in a bit of disfunction when it comes to orgasming. Despite my inability to cum, I very much enjoy having sex with my boyfriend on a very regular basis, however it would be nice to have the ability to finish once in a while

Any suggestions on what I should do to fix my problem??