when I saw your first post, I was wondering " it is true love?", even if I didn't speak out.
After reading your second post, I also wanted to ask " do you really love your second girlfriend?"
You are really young, pls think it over and over, who do you really love? what kind of life in the future do you want?
Responsiblity is not a tough thing, but a enjoyable one, you will know it later. Life is full of give and take, lose and gain, happiness and sadness, do whatever you think is valuable, enjoy and bear the following results. Always be a man!
Good luck, buddy!