does she like me or just jokking

last week a girl comes toward me and say she loves me and ask if if i love her to(her tone is usual, like asking a question she always ask) her fd are standing around her and she seems not suprised by that. i refuse because i am afraid she is jokking with me since she like to joke. i regretted. today i tell her i love er and ask her to be girlfriend when she just come out the classroom and she was a little suprised
she say need to consider and ask for my msn, i say i dont have then leave