Me when i cant stand myself

I've been thinking a lot about this guy a meet like 4 months ago, he's just my type I think I'm In love with him, and that's weird cause I had never fall in love, I don't know how it's does feel like. He know that I like him, cause a told him. I try to flirt with him and try to make him feel the same way I feel, but he just can't, that just made me feel frustrated and I really love his company and friendship. He also have a girl best friend, she's soooooo pretty and gosh I never felt so ugly, I Hate when I feel insecure just because a girl that it's more more pretty than me. I barely know her, it's not her fault being pretty, it's just me being jealous.