<human>: Summarize the given text in a few sentences.

disclaimers and details: my fiance and I are madly in love, and we have tons that we enjoy together. we're excited about our upcoming lives together.
however, she's absolutely crazy about kissing. it sometimes seems to be the only thing that makes her feel loved. meanwhile, I have some breathing problems (which she knows about) and find kissing for as long as she likes difficult and less than enjoyable. I made the mistake months ago in disclosing this when I referenced the fact that she likes kissing more than pretty much anyone I've met, including myself. she's got a history of abuse and betrayal which makes her distrust people and hate herself, so she took my comment to mean that I hate kissing her and I do it with a grudging heart.
in moments of stress, she also says she finds my face impassive and thinks I never have a good time with her - this despite the fact that I laugh and smile with her frequently, and frequently touch her in a gentle and loving way. kissing was the one sure thing to make her feel better and reassure her, and I've ruined it.
I'm pretty inept with my words when I get upset, and being accused of not liking her (something she will in better times admit is ridiculous) gets me riled up every time, leading me to accuse her of trying to sabotage the relationship out of fear. I also get mad that when stressed, she forgets all the good times we have together, remembering only the bad. I know I'm harming the relationship when I tell her these things angrily, but I don't know what to do. how can I convince her that just because I'm not as into kissing as she is, I still like it regardless, and that I love her?
<bot>: I like kissing less than she does (because I have breathing problems), she sometimes thinks this means I don't love her. what do?