bf snapping other girls

soo, okay. my boyfriend is going off to college in the fall, and earlier this week he had orientation, where he met quite a few people. last night, he told me that he wants to give me a heads up that him and a certain girl are friends, so that i wouldn't be surprised when i saw that they have a snapchat streak. 🙄
should i really care? of course, i'm glad he's making friends and stuff but
1. i ended streaks with 2 of my guy friends because they made my bf uncomfortable
2. does he really need to be talking to her every day??
i told him i'd prefer that he didn't have a streak with her. is this justifiable?? or do i need to "loosen the reins" or something.?
thanks y'all