Am I being too clingy to my crush?

Anonymous
There's this guy I like at work (I'll call him S) and we're close friends at work and he knows I'm like crazy about him. I get a vibe that he likes me too by his actions. But I really feel like I get on his nerves texting him a lot. I feel like he prefers to talk in person but I still get really nervous talking to him and say stupid stuff. We talk about videogames, music, cars, family, everything. I'm always the one who texts first, but he will usually answer and he will joke around with me too and we have good conversions. But other times I'll text sometimes multiple texts and he just won't answer. His best friend keeps trying to persue me and he just kinda backs off because his friend is the alpha male fuckboy type. I don't like his friend (we'll call him N) at all. But he keeps texting me and trying to do stuff with me he got my number off of S's phone. So S kind of acts kind of like he has really low self esteem and feels like N should get whatever he wants. I've complimented S and he'll say I'm lying. But he treats me really well and he's an amazing guy. He always notices if I change my hair or something, he brags about me to other coworkers, I've had other friends from work say they seen him looking through my profile pictures He's always concerned with my well being , He got this really nice new sportscar and wanted pictures of me in it. I told him he should take me for a ride and he said he'd love to. But then he'll go and act all distant again for a few days. I keep texting him and don't get answers at all. And he'll ignore me at work I don't know if I should stop texting him or not. I've asked him if I get on his nerves he says "no your cool".
I know he's been in a bad relationship years ago ( and she ended up getting with N) and hasn't even dated anyone since. I'm not sure I feel like he might just be afraid to get close to anyone or he just likes being a loner. Or maybe he's gay? I have no idea, he's so complicated.
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Also sometimes I text him regarding work and he won't answer. It's weird. And I know he sees the messages cause sometimes I use Facebook messenger through wifi if my cell reception is bad.
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I just don't know if I should keep trying to text him if he's not answering
Am I being too clingy to my crush?
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