Guys, this guy is acting like he fancies me but I think he's gay. Help?

Guys, I just started working at this new place and this guy on my team comes across a bit gay sometimes (things he says and how he says, wearing some tight clothes). A straight guy on my team also thinks he's gay. BUT since I started working there (about a week ago), I have caught him staring at my face across the room so many times, or turns his head to glance at my face if he's sitting next to me. One time a female colleague complimented my dress and he literally leaned back in his chair to look, checked out my legs and smiled. And he also teases me or makes flirty remarks, like telling me I have the prettiest office in the building. He has also touched my arm a few times. Anyway, I was wondering what guys on here think, could he be gay, or does he fancy me? And if so, why doesn't he say something or make a move?

Guys, this guy is acting like he fancies me but I think he's gay. Help?
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