Because sometimes it's hard to trust people.

[that answer comes easily to him]

Trust them enough to show them the parts of you that you struggle to accept, or to be able to help you with them in the first place.

[gestures vaguely at the symbol on his shirt]

There's this thought-- this feeling-- that you've gotta do it all on your own. That to protect the people you care about you can't let them in, can't let then help.