After 3 Years He Aroused My Feelings

Hi, My story started in 2006 when I was 16. Then dating sites had turned my head. I met a boy and we wrote to each other for a long time on the site, then on Skype and after about 2 months we decided to see each other. Our meeting was almost perfect, it happened again, we tripled and so we became a couple. Our relationship wasn't the rosiest, not that we had any problems, but he didn't seem to be able to relax in front of me, and yet I fell madly in love. Some of the people who will read my story will probably tell themselves that at 16 she hardly knew what love was, but I know how strong my feelings were. And so we were with him for a year and we parted at his request, and I had a hard time with our separation. After 3 long and lonely months we met again at his request. Our second relationship didn't last long, only a few months and this time I put an end to it. I went to work at sea for the summer, but things developed so I stayed there permanently. I started a relationship with a boy from there and we lived together and I forgot my previous friend or so I thought ... I was convinced that I would spend my life with my new one, I was sure I wanted to be alone with him, but until one day the previous one I did not return to my life. Somehow he contacted my friend and asked her to send me greetings and tell me that he missed me very much. When she told me this, I was stunned and said nothing, pretending not to say it. The next day, something seemed to prompt me to look for him, and I couldn't help but make a secret from my current friend Skype and find my ex there. We only wrote things together all day. The next few days I was going to go to my city (where my ex lives) and I told him about my upcoming trip, after which we agreed to call him when he arrived to see me. That's what I did, I called him and the moment I heard his voice I felt that I was suffering. We made an appointment and when I saw him it was as if I swallowed my tongue I couldn't even say hello to him and we went straight to the cafe. All the time I was shaking all over, my voice was shaking when I spoke and believe me I'm not exaggerating, and in my stomach it was as if there were butterflies fluttering fluttering .. After coffee we agreed to see each other in the evening I couldn't stand 3-4 hours after I got home I called to hear it ... The evening is not over yet and I don't know what will happen ... Basically this is my story and please if anyone can give me advice what are these feelings I have for my ex and what should I do? Should I abandon my current friend who gives kindly and dearly to me to give another chance to my first true love or to run away from it and continue to maintain my current relationship for which I am not 100% sure that I want it ... I look forward to your advice ... I will be very grateful to the people who try to help me in some way!