Why would a guy start snapchat streaks?

This is a little embarrassing lol, I don't have much experience in dating. My ex was the only relationship I had. I haven't officially dated anybody since, so im inexperienced in dating. There is this guy who I had a thing for since about 3 years ago, I was still with my ex then so nothing ever came of it. They were friends, aren't anymore, and I'm 99% sure the feeling was mutual. Recently I've been wanting to reconnect with this guy, but the last time we talked wasn't exactly on good terms. Things are fine between us now, just awkward and we haven't spoken in a year or so so I wouldn't know where to start. Till I saw him in my suggested snapchat friends and said fuck it and added him. He added me back within the minute.
This morning I had a snap from him. It was just a black background with "streaks" written and and S drawn above. You know. As far as I know, streaks are just for making your snap score go up? But of course I'm going to overthink this because I like him. A friend of mine said why would he go out of his way if he didn't like me? Her point is that he's a pretty well known artist in my hometown so I know he's got tons of friends on snap. If he's got hundreds of friends on there what are the chances he's keeping streaks with all of them? Can you even send multiple snaps at a time? Or another thought I had was maybe its just cause I'm a new friend?
I know I'm most likely overthinking this whole thing, but also the only time guys have ever sent me streaks I knew they had a thing for me. Thanks!
Why would a guy start snapchat streaks?
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