Many of you guys are hyper critical of Matt.He is unsure yet if his emotion having only had failed relationships in the past, then there is the boss thing he needs to resolve in his own mind and that this relationship has moved to live in with benefits stage and more so quickly. And he still wants to enjoy life in a flat on his own for a while before he settles down.
He needs to realise that Seamus is in it for the long haul but can't and won't stand two timing and neither should and Matt its interested in that either ,becoming a dad so soon to his brother has caught him on the back foot and other things haven't always gone his way.
What he needs is to seek advice from his Dad who has been there and seen all sides of the equation.