Zero sex

My boyfriend and I haven't had sex in over a month. We both have high sex drives but hes just been.... I dont know. I still want it but I'm not going to push him if hes not in the mood. I've tried to subtly hint at it and I thought maybe he just didnt notice because hes oblivious, then a few days later I made a blatant attempt and he completely ignored it. Then just last night I got dressed up (well, more undressed then dressed lol) and I sent him a picture when he was supposed to be on his way home with a flirty text. He opened it, re opening it, came home two hours late, and just brushed it off and went to bed. Im not mad at him or anything but... i feel like I've failed and like hes not interested in me anymore. We dont get to see each other too often because we dont live together, I only get to see him maybe twice a week if I'm lucky, so it's not like hes burned out. Right? Does anyone have any advice or has anyone else been through this?