I had problems with attachment and intimacy. I would probably have married my college girlfriend had I come out earlier and addressed a lot of the feelings I was having.
I think a big part of my issue was the fact that I was essentially hiding who I really was. I knew I was trans at 17, and from that point forward it was a big secret until I came out. People weren't shocked when I did finally come out, but in my mind it was my deepest darkest secret and I was sure that I would lose friends, family, and that people would think less of me for it. So I kept it buried for years, and it's tough to feel close to other people while withholding something so important about yourself. I knew that the version of me that my girlfriend loved was not actually me, and I was afraid that if she knew about the real me, that she wouldn't love me anymore. So I kept her at arms length and kept being trans a secret until I couldn't anymore. I'm using her as an example because she also applies to my intimacy issues, but what I've said above is relevant for everyone that was in my life at that time - family, friends, etc.
As far as intimacy, I pretty much loathed physical contact pre-transition. It ended a lot of relationships that I'm sure could've been great. In the above mentioned relationship, it was a huge issue. And it was worse because in hiding what my true issue with it was, she was led to assume that something far worse was causing me to withdraw. It was just a mess all around.
So in short - yes, most definitely. And in my case, it got immediately easier to connect and feel attached to people once I started socially transitioning and knew that people were on board.
