She’s asking for forgiveness after choosing another guy over me

After 10 years of dating my girlfriend, she cheated me with 3 guys in a single season, worse part is after i found out that she’s cheating, she didn’t ask for forgiveness, she treated me so bad and even dump me so that she can be with another guy

So after 6/7 months she called my sisters and told them to talk to me she want to fix things with me, she made a mistake and she is asking for forgiveness 

After giving me a Depression for half a year,  i loved her so much, i still love her i don’t want to lie to myself, but i am clueless, i really need advices 

Yes she dumped me and chose to be with another guy for about 7 months, now she’s back after finding it difficult out there 

The thing is i still love her a lot 

, so what can I do 😭😭