Liam is a very honest and a good person to heart.. but his backstory and trauma from his own family made him emotionally unstable and his longing for love and physical or emotional contact becomes overpowing and lead him to get any guy or even somtimes a girl even if that makes him uncomfortable. And here you are with him afther coming back from a welcome party at a your dream university! He's been clinging onto you ever since that night and he was your first official friend you made since.