Trouble in the bedroom

I have been dating my fiance for 3 years and we never had a problem with sex. In the past year things have come to a screatching hault. I would say once every three months at best. Ive noticed she has put on weight ,which does not matter to me, i still find her to be gorgeous! and she has told me several times that it bothers her in a way that i wouldn't understand. Even when we do , shes never exicted like she used to be... We try to talk about it, and it always turns into an arguement. Is this a bad sign of things to come , or am i just over reacting... Please help.. Thanks!

She probably has insecurities about her body even when you tell her it does not matter. You have to give her some pep talk about how looks don't matter in the end, where it's all about the personality that shines through indefinitely, and you love her for who she is, not what she is. I think she needs some sort of confidence boost in herself before she can please others

I am a woman who had a similar problem. My boyfriend and I are very passionate for each other but I felt very insecure about my appearance naked. What helped me to overcome it is that I told my boyfriend of my insecurities and he didn't say anything, he just to me and held me. Then he made love to me. And that is when I realized it doesn't matter to him so it shouldn't to me. Sometimes actions or better than words.