Im 20 and my boyfriend is 23 turning 24. We've been going out for 2 years and we have NO sex life. But this has not been a gradual thing, this has been going on for 2 YEARS! At first when we started to have sex it was ok then soon after I noticed there wasn't any evidence that he had 'enjoyed' sex. I asked him about it and he said he's been faking it! He wasn't lying either. Then the sex drastically cut down from 2-3 times a week to once every month. Now we have sex every 3 months. I have spoken about this to him, i have worn sexy underwear, i have tried doing things that I hate to him like going down on him and nothing works! I feel so unattractive and useless but he keeps telling me he loves me. When I talk to him about it he says he's tired, sex isn't important and that he doesn't feel like! I fear that he's cheating on me because he finishes work at 5, he should get home at 5.30-5.45 even with traffic but he gets home at 7.30-8. Also, a couple of weekends ago he went out drinking (he has a bit of a drinking problem) and he stayed out from 6pm Fri to 5pm Sat. He didn't let me know where he was at all and i had to call his boss and friends cause i thought he was dead! Then when he comes home he says his car keys and wallet were left in a cab so he walked to their lost and found but meanwhile, according to our bank statement, his card was used at a brothel and $800 was spent. He said it was truly left in a cab but i don't know if i believe him. I love him, i don't fully trust him and I don't know what to do.