What Does T M I Mean A Boy On My Bus, We Catch Eachother's Eye A Lot. He Stares When I'm Not Looking. What Does This Mean?

A boy on my bus, We catch eachother's eye a lot. He stares when I'm not looking. What does this mean? - what does t m i mean

This morning, as he has in the bus, we twice in each other. Our unique, we have in common is the most common. I looked up and he looks at me, this is repeated for the remaining period. I do not know how to do this without question seemed weird or gross or something.