Should i be mad? what should i do?

ive been told this is a total overreaction but i beg to differ. 10 days ago my girlfreind of the last 15 months (who i was very much in love with) broke up with me over text (not in person) of course i was deeply sadden by this but the thing that annoys me more is the fact that she didnt respect me enough to break up with me in person. she still wants to stay friends but to be honest do i really want to stay friends with someone who treats me like that? problem is i see her 5 days out of the week anyway at college so obviously i will still be around her for a few more months so i cannot exactly avoid her. i cant stop thinking about her ive been losing alot of sleep and just feel lost, what can i do?