How to deal with jealousy

I have a friend who has always dominated any interaction with men while we were both single. She would go in saying that he was totally my kind of guy but then she would jump in and get really close to them, dominate the conversation. She is very respectful in all other situations and this only happens when she’s drinking.

I’m in a new relationship. I know he’s totally into me and we’re exclusive, but he keeps telling me how cool she is. I’m trying not to get jealous but it’s so hard. Last night he commented on how the guys she’s going for do not seem like her type. That made me so uncomfortable. Doesn’t help that I’ve been cheated On a few times.

Any thoughts to help me get past this?