So I've been seeing this great girl for over a year but true to form have been texting and keeping in touch with others during the whole time. She caught me texting a few times, nothing too shady but still suspicious. After confronting me with it, and me lying and having alot of word exchange with her calling me out on my behaviour, she ended it a week ago. She has gone NC and blocked me but I really feel dumb since I wanted to be with her. Lost opportunity. I did email her today to talk and she responded very stand offish. On the premise that she is a catch, and I fucxked up, advice please