Does my boyfriend have a crush on her?

I’ve been with my boyfriend for 7 years and we have a great relationship. I love him very much, he’s never given me a reason to distrust him. We’ve been talking more and more about marriage but no proposal yet, we’ve had several family member weddings this year. We also live together and we get along great, not like other couples that constantly argue.

Anyway, I’m not one to have much friends. We hang out with my cousin and her husband a lot. Lately an old mutual friend of ours has been bringing his long term girlfriend around all of us and we’ve been hanging out. I’ve become more closer to our friend’s girlfriend. Now I’m wondering if I should try to avoid this friendship? We’ve been friends with her boyfriend for years, we attended his surprise party. My boyfriend sort of brings her name up when it doesn’t need to be.

She’s cute and working on her PHD, some of the same qualities of our personality is the same and I’m working on my Masters so it’s like his “type”. Goody girl, studious, goofy. Anyway, when we were all playing a game he got a little competitive and blurted out to her “I hate you!” I’m a joking way When she stopped him from winning. He never says that to anyone so it was a pretty strong word to say.

When talking to my sister about our phones and about the newest iPhone. My boyfriend has an old iPhone 5 and he brought up “her” name again and said she’s the only one that has an old phone like her. Later that night he brought up her brother and his odd name.

The other night we were planning a vacation. I mention the new friend of mine is from where we were thinking about And he said “maybe she should be our tour guide” and I was like “why?” And he said he was just joking.

Its making me feel sick thinking about it. Is it just on my head? Is this something to worry about? I should probably keep our distance from the triple dates but I’m feel sad that I may not have a friend anymore. My cousin is closer friends with them so I think I would have to talk to her and mention how I wouldn’t want them invited to our hangouts if this is a problem.