Should I be offended?

My SO has a much lower sex drive than I do. I have mentioned that I'm always in the mood but I never push or pressure him or retaliate if we don't have sex. However, how he talks about sex to me has started eating me up. He will say things like, "oh, poor you, looks like you're not getting any" (when we are out of condoms) and things to that affect. I HATE that every time he talks to me like this it's always as if he is doing me a favor by sleeping with me and it's only me that will be at a loss or bummed by not having sex. I'm not mad about not doing the act, I don't want to have unprotected sex, I'm upset that he doesn't seem to have any interest whatsoever in sex with me. We have been together over 10 years and have kids together and its eating me alive to think that he doesn't want me and isn't attracted to me. I've tried talking to him about it and he always says he is attracted to me but nothing ever gets better. I love him, but I feel like I can't keep doing this. I wish I could remember all the things he says but right now I'm so upset and hurt that I can't. Our most recent spat was because I asked him to go to the store to buy more condoms after being out for 3 days and he said he didn't want to go to the store and that he was going to take a shower and play his game instead. I told him again that I would really appreciate it if he went to the store so that we would have some condoms on hand, even if he didn't want to do anything tonight, and he again said no. I gave up and backed down and just said, "ok, fine." And he said, "ok." I went to the living room and started reading my book after that and he took a shower and eventually left after and came home with condoms. He said, "here you go, you lucky dog, you. Are you happy?" And I haven't talked to him since. I don't know if I'm overreacting or not but I'm so hurt. I truly just dont understand. Please give me all the advice and insight!