The past(Jealousy's a big issue)...
Liam: I am getting married.
My face was surprised rather it was a shock.
"You found the one?"
Liam: Hm...Maybe.
"I need details."
Liam: Her name's Lisa, she works in the military with me, medical department. I met her when I was shot on a mission. Then we had feelings for each other and we fell in love, and we're getting married next month.
"When did this happen?"
Liam: Last year. I want you to be my best man.
"Liam, I'm a girl."
Liam: Well just for the appearance.
"Stop it. Well in that case I would love to be your best man."
Liam: Perfect. Actually, she resembles you more. The stubbornness, childish behavior.
"I'm not childish."
Liam: I know what you are. So, shut-up, don't even try to deny it.
"Wait a second. You loved her cos she resembles my personality?"