Search Results: attracting girls with boyfriends

Im not sure if its just my insecurities talking
We were at my friend's party
I know a few girls that think my boyfriend is hot because my best friends told me who those girls are
And I told him about it
So anyway, all of my friends were there - boys and girls
And he always wants me to be around him, sitting on his lap, cuddling me, kissing me here and there

Would he act like that if he's attracted to my friends? Or think my friends are attractive?

So my boyfriend lives with 2 other random guy housemates
2 months ago, one of the guys brought his younger sister over and told my boyfriend she's gonna be living there for a while
she's an import so she still has a Spanish accent and an intenrational student
Sometimes he brings her up like "omg she's so annoying, she uses half of my dishwasher liquid in a day"
Or
"Shes so annoying, she let all the birds out and then the big bird comes to me and i told her to take it off"
Or
"In the middle of the night, I went to go toilet and I was wearing just my undies, and she full came out with her phone lights on and she saw me, what a retard, there was lights on the side"
Etc

And then he said this:
Him - but if I was still 20 or 21, i would be still immature, i would try go for her, thinking to get into her pants
Me - so you're attracted to her?
Him - i said about my immaturity. At that age, i was still immature and would want to fuck. And she's 17 or 18. she's still a baby. Im 28. Girls that age is too immature for me. No way. The minimum i would go for is your age. Nothing below.

Why would he say that?
Is he attracted to her?