Guys, He saw me and didn't say hello?

So, about a year ago we met in class and he started texting me. He's 25 and I'm 20. He is the typical popular guy and back then he would invite me to hang with his friends, he also drunk texted me a couple of times but I never really went out with him and nothing really happened. Sometimes he would say things like that he wanted to kiss me (joking) or that I was pretty and his friends would say things about him to me (we texted for about 4 months but he kept joking about kissing and stuff like that until about three months ago). After that he went out with a couple of girls but we remained very very good friends. Today, after a month of not seeing him I saw him at a bar he was on the table next to mine with his friends and the girl he's seeing, he was literally standing next to me, several times he passed my by but he didn't say hi. Why do you think he didn't say hi to me? I'm 99% sure he saw me
Guys, He saw me and didn't say hello?
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