Need help with porn addict.

Harley
My boyfriend and I have been together for over a year and as of the past few months he rarely ever wants to sleep together. If we do it's because I start doing stuff and that makes me feel like he feels like he almost has to by then. I sometimes use his phone to look stuff up and there was multiple occasions where I found he watched quite a bit of porn on almost a daily basis. I've told him before I don't like that and it makes me feel uncomfortable and like I'm not good enough basically. Today I used his phone and found out he has been deleting his history and just watching porn and we haven't slept together in over a month. I'm not sure what to do. I've tried sending him sexy pictures, sexy pickup lines right before he gets home from work and even buying stuff for us to use and still nothing. I feel like he doesn't like me anymore and it's very sad and hurtful.