Normal account here - usually just lurk but I wanted to ask an honest question here because I really feel like the asshole. 

So me, and my girlfriend have been seeing each other for about 18 months at this stage.

Sex life started out great - fantastic in fact. And we definitely both love each other an endless amount. 

We've both been very open with each other, and recently our sex life has been in a bit of a lull, I've always been the one to initiate it, but that's just standard I think really, barring the odd occasion. 

Recently; after another time of attempted initiation, I went a touch quiet. She asked me what was wrong and I explained about whilst the sex itself wasn't the issue, it was affecting my self esteem a little, more to the fact of the rejection. I explicitly explained about it not being anything she's done wrong, and I love her to the world and back, and now I feel as if I've been a complete asshat. 

We've had conversations about it, and she's explained it is due to her own self image, and I understand, and I support her everyday; I wouldn't change her for the world, but AITA for feeling insecure about this? Its not even that I just "want sex" or even the physical activity thereof, I just feel my own self worth plummet each time. 

Thank you, and please help! 