Random Parvill Headcannon I felt I needed to share I dunno why:

Will Strife secretly has really bad anxiety. He's an overachiever and is constantly trying to be... better at work, fitness, everything. Just because he can't truly believe he's good enough. So if someone (aka Parv) told him they loved him, instead of saying "I love you too" He would run away and cry because he truly believes he is not good enough and never will be. This could cause tons of problems because he doesn't have positive reactions to affection and might cause his lover to think Strife doesn't love them back even if these reactions mean the complete opposite. 

I dunno. This is what happens when I stay up late and spend the day at school with friends not thinking about anything.