Rant/Advice/IDK

I've been very sick this last year & losing weight continuously (I am going to the doctor to try and figure out what's going on). I weighed in at 102 the other day. From 145 in June of 2015, to 102 in October of 2016. Long story short, my boyfriend wanted to have sex this morning & I literally was just NOT IN TO IT. He went on to tell me that ever since I weighed myself that day, I haven't been into it & that I don't let him touch me as much. He told me he didn't want me to think my weight would change his mind about me & that I will always be beautiful in his eyes. But I can't help how I feel, & no, I don't feel beautiful right now. I guess I didn't realize I was distancing myself like he says I have been. I mean, I'm not mad that he told me how he felt. He's always been open & honest with me... but I guess I kinda feel like shit for making him feel like that. I don't know. I feel all sorts of ways about this. I'm so.. I don't even know.