Listen.
If this is happening, I GUARANTEE the person is not looking for a relationship, nor will they in a few months, so stop telling yourself that excuse and find someone a little bit older (mentally).
2) Their idea of a first date is Netflix and Chill
3) You just know they're talking to 2938473928 other people at the same time.
4) They NEVER reply right away.
5) Forget about a phone call....what is that call button for anyways?
6) They go out without inviting you.
7) They tell you they're "just looking to have fun".
8) Their favorite time to text you is at 10pm...or later.
9) The place you spend the most time together is a bedroom.
10) You define the relationship as "seeing each other"