I'd been with my bf for 5 months before I suspected he was attracted to men. He had mentioned 'experimenting' while drunk and on a dare as a teenager, but other things started to come up - like I noticed he never comments on a pretty woman, but will comment when he thinks a guy (like an actor or something) is hot. I confronted him about it - he said he guessed he was bi, if you had to put a label on it. He doesn't like labels. I asked him if he'd ever had a bf, and he said no.

Fast forward 3 months to now. I now knew he had sexual pictures of guys on his computer, he had told me that. I checked his email the other day because I (with his permission) had some email sent to it. Being naturally curious and female, I checked a folder specifically marked with a guy's name (I thought there might be cute pics) - and found, not pics like I thought I would, but explicit love letters between him and a guy he knew on the internet. The last email was a year old - but they referred to each other as 'boyfriends'. Remember he said he had never had one. So I started looking through his computer - and I noticed that all the porn he has downloaded, pics and videos, are all of guys - no girls at all. When I asked him about the bf, he said he didn't feel it was a real relationship, it was years ago, he didn't feel as strongly about the guy as the guy had about him, and he didn't really think about it. But later I also noticed he has the guy's phone number in his phone (I was looking for mine - i'm hopeless at remembering it).

Our sex life is, well, nice, but I wouldn't call it abundant. It's usually me that initiates it, even tho he often makes mention of being horny or that I look pretty. He tells me he loves me all the time, and has mentioned marriage one day.

Now he's 22 - and i'm worried that he might be GAY rather than bi. I've no doubt he loves me, but i'm not sure I can commit to a man that might be gay - what if he comes out in a few years? I'll have invested all that time into this relationship, only to have it thrown away because he wasn't sure what he wanted. I have specifically asked him on 2 occasions whether he is gay, and he assures me he isn't.

I also asked a gay friend of mine, who suggested that the vids/pics satisfied his bi side and I satisfy his straight one, but I don't know about that.

What do you think? Am I right to be worried?