Heartbroken with Cheating Girlfriend: Seeking Advice at 30

Sir , Honestly I'm aa merit student ...I scored 95.1 percent in boards , 94 percentile in jee main and around 70 marks in jee advanced....Honestly sir career is going good....But sir , Coming to my relationship I've aa girlfriend ....She is also aa merit ....She scored the same percent in studies just like Mee...We've been in relation for 1 and half year from my 11 th class onwards....As 12 th is ending up boards mains and adv exams coming up ....There has been distance ...Like her parents were strict ...So I couldn't get time....I felt like she is ignoring me for her career ...but honestly sir she didn't think abt Mee....She always think abt only her career....So fights and all....But we use to get close again after every fight....But She behaved strange like she was done , when fights were going on....and she left Mee 2 days...just because of problems going on with me in my tough times....She left me like anything....I did love her soo muchh and she betrayed Mee...I'm soo much depressed I just want her to come back for Mee...but she doesn't.....because she never loved not even aa drop of tear...she told me this that she doesn't need to cry because she don't love me anymore....Sir how do they just leave like that....Girls In the society are like this rn....I'm soo muchh stressed and depressed sir....What do u say sir ?

I had a relationship of 3 years. It was going good , we have a battle for not talking as I as busy in my hectic schedule of job. but then also she had done the effort to not to give up in relationship. But at the mid of job only suddenly I get to know she had a relationship earlier also of 3 yrs after knowing this it was completely a disaster for me and she had a physical relationship with him. Which is like shivering for me that day and upto the week even I am not able to focus on the things as I loved her too. As I love her I have scolded her so much to not to tell before.Now I am at a stage where I had some memories I was being a good connection either it is of intimacy emotions . But the things she has gone is killing me though I love her it is having a different feeling What to do now.