Very sad should i go for M

I hv abstained myself from M from last 15 days to talk to a girl finally i got some motivation to talk to her last day when i start conversation in a cheeky way after the college she makes a good conversation wid me and smiles but today when i saw her i thought she will react to me but she didn't and ignored me after sometime i understood she tells all conversation to teacher and whole class now my image is spoiled everyone is looking at me like i hv done something wrong if she doesn't like cheesy talk then why she pretend to be happy to talk to me
And say thanku many times when i said her u r really pretty now my heart and image both broken up

 

Thnx bro u r right