<human>: Give me a shortened version of the text

My boyfriend recently told me he wonders what it would be like if he and our mutual friend dated instead.
They're childhood friends and she only views him as a brother. She's the only close female friend he has.
I got jealous and told him to hang out with her less. Is that okay to ask? He promises only hang out with her when we hang out with our group of friends.

He told me that I should know because he thinks it's emotional infidelity since he thinks about this from time to time. And told me that if I felt uncomfortable, I should break up with him because it's unfair for me. I told him that as long as he doesn't act on those feelings or curiosities, I wouldn't break up with him.

                            

I also asked him if he would prioritize her over me and he told me:
    
* If we both asked him to hang out on the same day, he would hang out with me

* But if something serious happens to one of us like an injury or an emotional break down he would put whoever first

He told me he loves me and he's happy with me + if our friend actually ends up liking him, he wouldn't give up our 4 years for her.

**Extra details:** We are both in our second relationship and we're committed to each other.
Our plan is to graduate college (maybe do graduate studies), get started with our career, and get married.
The idea of being out there and dating around isn't for us.
He's happy with the relationship we have now. I'm happy with everything except for his "wondering".
<bot>: Boyfriend wonders how it would be like if he was dating his childhood friend but wouldn't give up our relationship if she likes him (she sees him as a brother though). I feel uncomfortable and jealous now.