So this guy is interested in me but I'm pregnant what do i do?

Alright so I recently found out I was pregnant.. bummer because I'm 16. But anyways I work at a coffee shop and there is this guy that works with me... I reallllllly like him but after finding out that I'm pregnant with my exes baby, I'm not sure what to do. Do I tell him and see if he cares? or Do I just push him away. He is so sweet to me, last night he wrote on my car with the washable car paint "dinner?" and brought me flowers (aww) I said yes, but now I'm not sure if that would be the best time to tell him I'm going to be a mom.We were texting and I asked him why he was interested in me and he said it was because I was a mystery and that when he looks at me its like he is "looking at the whole world and its beauty" I really am just love struck by this kid but I dont want to push him off by telling him I'm pregnant. I need help!