Nervous about my best friend coming to stay with us

Me and my best friend have been friends for about 7 years. I’m 22 and she’s 23 almost 24. She is coming to stay with me and my boyfriend for the weekend. I’m being incredibly dumb about this but I’m so nervous! I miss her like crazy, we live about 3 hours away from each other now, but she’s just very promiscuous. She wears very low cut tops, her boobs are always falling out, she wears super short shorts, and she drinks a lot. Last time she went partying (I don’t party) she told me she tried to have a 3 some with a couple. Now I know she would Never try that with me and my boyfriend but it doesn’t make me any less nervous. I’m nervous my boyfriend will sexualize her. I have Very low self esteem. I’m an attractive girl but I have small boobs and I’m nervous that he’ll like her boobs better than mine. Please no mean or rude comments. I am working on my self esteem. But I was in an abusive relationship before this one and not only was it physical but I got cheated on a lot and he flirted with girls in front of me, and a lot other stuff. So I’m working on it but with my friends past and me workin on trust with my current boyfriend , it just makes me nervous. My friend is very flirtatious too. I’m also worried he’ll find her more attractive than me.

I’ve also caught him blatantly looking/staring. I believe that the first glance at someone attractive is human. But the continued staring/lusting after is a choice.

•No rude or mean comments. Just looking for constructive advice