“I broke up with my gf because the fights were becoming too hard to bear but there is this guy I was really interested in and he treated me really well and helped me get through the fights sometimes but i got to know this guy loves me and since I was already interested in him I broke up with my gf but now that I have broken up I feel miserable like I have done something wrong and im hurting her and I'm hurt too because I genuinely loved her. was it right that I broke up?”
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Someone answered with kindness...
Tell her the reasons why you did it. Make sure you tell her that it's not because of her. Make sure she doesn't feel bad about herself or blames entirely herself for it.