It seems there are a few things going on here.

I would suggest you look into some books on how men communicate differently from women. His not texting you first could just be him being a guy.

Next, you need to develop some more confidence in yourself and the skills to know when you might be oversharing. The kind of venting you need to do may be better suited for a girl than a guy. The fact that you said people get tired of you could indicate the oversharing or it could just be your misreading the situation.

At any rate, value you to yourself and you will attract people to you who value you for yourself as well.

And "really loving" somebody at 15 might honestly not be love at all, not to be dismissive but just letting you know from age 50.