Questions: Flirting

My crush either sits side by side with me, or he will sit or stand right in front of the desk I'm at with his crotch right where I can get a good view. Always! Like he totally blocks my view by standing right in front of me while I'm sitting, so I have to look up at him (ego, power thing?) or, if I lower my eyes, it's stare at his junk time. Not that I mind, ha ha, just wondering if this is some signal he's giving. He's done stuff before like ask me to look at his right pocket when I'm on his left, so I have to look at his crotch again.

He also talks about his junk a lot, like I was eating some nuts and he came back from the restroom and I asked if he wanted some nuts. He said he had just touched his own, which seemed unnecessary to share. He talks about sex a lot with me and jokes about blow jobs a lot. Is he hinting at something? His eyes shift down to my shirt a lot when we talk. I think he thinks I don't see him peeking because I don't say anything.