Why do I feel so crappy about it?

okay so I signed on to Msn and the guy that I like was on,(he already knows I like him and there’s a possibility that he could like me but won’t admit it but too long of a story so I’m not going to get into it) but he was on for a while then I sent him a msg at 5:08 p.m. saying “hey”, and we were talking good, then I asked him “how’s everything” then he said that he was busy with school and he said “how about you?” then I said well yea same here, and trying to get a job, then he said”kool, where do you go now?”(because he’s in Uni and I was suppose to graduate last yr but didn’t) then I told him that I’m still in highschool but was only supposed to be there for a semester because I was supposed to do 5 credits, 4 in day school and 1 in nightschool but my counsellor gave me a spare and I was trying to get it changed but it was too late so I’m there for 1 more credit then he said: awesome, hey I gotta go, it was nice talking to you, take care bye”. then he quickly signed off at 5:19 p.m.before I got a chance to say bye but I left an offline msg saying bye. then he signed on again 30 mins later and signed off again.

I don’t know why I feel so crappy about it so crappy that I wanna cry, I feel like just because I said I was still in highschool, maybe that’s why he just said he had to go, do you think I’m being too sensitive?