So this dates back to 2015. We used to study in tuition classes while in school,she was the one who proposed to me, I took one year time and we started our relationship in college(We were in separate colleges but very close) . It went great, for the first one and half years , we used to go out almost every second day for hours , call and talk for hours, we went to the movies. We were so in love. During 2nd year of college she had her sister’s marriage, we didn’t get to talk for almost a week, I noticed she was avoiding me. Asking her , she replied that she suddenly stopped “feeling the love”. I was shell shocked, how could this happen in such a short time ? Note that in the 2nd year, we went out comparatively less,so we decided to meet again, we met for two consecutive days , she clasped my hand on the bus and she said that she has found that feeling again. I was glad. So in our third and final year, as you know due to the hectic schedule in both our colleges, we met even less , but we used to contact regularly (call and texts). After the final exams, she took a trip with her family, after returning she said that she again stopped feeling the love. I was distraught, she would literally be sad and crying,  but she would say , she couldn’t find that feeling , she said ” My love for you goes out and comes in” , and we eventually broke up, she was depressed and had to see a doctor, now she’s fine and she has apologized to me for not being able to work it out. My question is, could anyone explain to me , how the feeling of love can go out and come back again ? Could someone please shed some light, because to this day, I feel really sad because it didn’t work out and I have no explanation , yet we were so in love and we understood each other very well, and mostly because she was my first girlfriend. Thanks in advance.