What is this manga's name?

i read a lot of yaoi manga and i read this manga awhile ago that a guy who was bored with his mundane life so he did something completely out of character and had sex with some random guy behind a building. The seme has light hair and is tall, the uke has dark hair, glasses(I think) and is shorter than the seme. The seme finds the other guy and is looking for a serious relationship if I remember correctly. I really liked this one but I can't remember the name of it to save my life please help me.