Trying to tell if he's into me at all...help

Theres a guy that I work with, he's 10 years older than me but I’m definitely attracted to him. I feel like I can read that slight vibe from him too but not sure.. whenever he see’s me he always will say something like “here comes trouble” or “thanks troublemaker” ... we tend to make eye contact a lot(I guess stare) and i jokingly ask him if he has a problem... but he’ll go out of his way to mess with me; or say “mean” things definitely have caught him checking me out like twice... I’m pretty distant from him because i don't want to give away that i kinda like him... and i don't think he can tell honestly, but he jokes around with everyone... and tonight he asked if i needed help putting my necklace back on and he did that for me so 🤷🏽‍♀️🤷🏽‍♀️🤷🏽‍♀️