Caught my man liking a pic of this girls butt

On Facebook… we’ve been going through rough times the past two month and I happened to go to her page and see a picture of her turned around in the mirror and he just liked it. Not loved it just liked . Her ass is big. I hardly have one anymore. Since we’ve been together I don’t know how but I’ve lost a lot of weight and barely have anything. I called him out on it and he says he doesn’t remember liking it it must’ve been an accident. His cousin had kids with the girl. And he hasn’t liked any of her other posts at all except this one. Could I be possible he’s telling the truth or is he lying ?? What should I do and do I believe this

Vote below to see results!