Is this something to worry about?

I started talking to this guy via Tinder. We went to dinner and decided after that to keep things casual because we weren't looking for a relationship. However, I kind of started to like him more than just a casual hookup. 
One night I went over to his place to hook up and when I leaned over to put something on his bed side table, his phone lit up with a tinder notification saying he had a new match. We made eye contact after that but we just kind of ignored it. 
I deleted tinder after we met so should I be worried he's still using tinder especially if I think I might like this guy? I just feel content with what we have/could have so I'm worried if he's looking for something better.