Why does my partner's condom keeps coming off inside?

Quite often when my boyfriend and I have sex, the condom disappears into my vagina. As you can imagine, it is extremely mood killing and a little disconcerting for me to have to reach up there and find it. I read your response to another couple with the same problem, and we'll definitely make sure to hold onto the condom before pulling out. I use Depo-Provera (so the condom is used just to be extra sure), so I'm not particularly worried about pregnancy. What I would like to know, though, is why this happens to us so often? I've never lost condoms with any other partners. I also have the feeling sometimes that it might be coming off before ejaculation. This seems to happen quite frequently (one out of every two or three times we have sex). It's kind of frustrating. Is there anything else we could do differently?


How do I get over divorce pain?

I haven't really been able to talk to any girls since my breakup with my ex-wife 6 months ago. We haven't really signed any divorce papers, so I feel very obligated to stay faithful to her even though our relationship as we know it is over and done with. Will I still have this problem even when we actually get divorced? And will I forever feel bad about making the first move to end this relationship? Because for the past three months I could neither sleep or concentrate on my studies. My commitment to her and my love for her was the only thing that helped me to go on with my life. Now that's over I am totally lost. Please help me with my problem.