My boyfriend and I have been together for 5 and a half months. We are both in high school and we are really happy together. We have had our ups and down just like a normal couple but most of our fights would start cause of him. I always have felt as if he isn't putting that much effort into the relationship and this is something that truly upsets me. 

Anyhow, about a month ago, our summer holiday started and I went back to my home country to see family and friends, and he travelled to his. There is an 11 hour time difference, therefore we found it very difficult to get used to all these changes. My boyfriend didn't like the idea of me going out with my guy friends and continously fought me, stating his worry that the guys might try something on me. After a while this started to really get on my nerves, causing me to distance myself. Meanwhile, I met a guy 4 years older than me and we start talking and flirting, mostly after we drank. 

One night at a club, after some dancing and flirting, he took me to the bathroom and waited for me outside. As I came out, I saw him standing there smiling at me and I don't know what got over me. I ran to him and started making out with him. It got very intense and we continued for a couple minutes. He then asked to take me outside but the guilt rushed in and I left immidietly. 

When I saw him the next day, I told him the truth and apologised that I did that to him. He said that it is alright and that we could continue if I wanted. Feeling guilty about everything already, I kindly said no and cut contact with him. 

Should I tell my boyfriend? I really do love him and he is an amazing guy. I was just lonely, upset and drunk and it meant nothing. I didn't mean it. I feel like a horrible person already but I don't wanna lose him. I really do love him.