Whats the deal with this Virgo guy—?

So there is a virgo man in my work and he stares at me a lot, and stuff and i get that feeling of sexual chemistry between us, we have had a re moments of power struggles as he is above me, but lately we have been getting on really well, yesterday he told me he was going away for a week from work, and said he was going to see his mum and dad which i found was weird as he never opens up to me its normally one word answers, Today i asked him if he wanted anything to drink and he was like no but thank you that is very kind of you, i thought that was really sweet, i really like him, but i think he likes another women in there as well as he flirts a lot with the other girls and sometimes he looks to see my reaction, and i feel too things sometimes jelous but not cause of the women but becasue he is not giving me his attention, and 2 kind of like grow up and stop playing games, well today was the last time i was going to see him for a week and he was very off and distant with me all day, he stayed away in his office and diddnt really make eye contact, but then he comes down and is talking away to the other women i was telling you about, and i dont know if he was gaging my reaction or not, i get on with her, and i just dont know, i said to him before have a nice week and he was like ok thanks called me my name and then went by but kind of in a disintreasted and boring tone. I am starting to like him but i need to know

any signs do they do this?
how do they act when they like you?
I ma at a loss, he seemed more intreasted when i was meaner to him?
am i waisting my time virgo men what do you like?
but then i am a virgo accendant and i act not intreasted in men when i like them at times, and i have flirted with other guys to make them jelous, any advice form virgo or people who date them please—