HELP!!

My boyfriend of 6 months has never really looked at other women until recently. I saw he subscribed to an account that was nothing but booty pics. Not all were naked, but still. I confronted him. He lied. I confronted him later the same day. He admitted it. I've been trying to get over it, but I'm also on my period & the hormones aren't helping. I trust him & love him very much. He promised to never do it again. This is the first time he's ever really slipped up like that. It's been almost a week & I keep telling him "it's okay" & "I'm over it" & things like that; but I can't just let it go. I will never look like that & I don't really want to change who I am, but I feel like I'm not satisfying enough or maybe it was just then. He said it was because we were apart for so long (4 days) & he lied because he didn't want to upset me & make me mad. I guess what I really need here is some advice on how to cope with the pain of feeling unwanted, or even ways to just boost my confidence & let it go. I know he likes my body, but sometimes, I'm just not sure I'm what he wants. How do I get his attention? Please comment.