Colleagues with benefits?

Mew , Art and Gulf are working together in a series. Mew is in love with Art and when he confess his love to Art he gets rejected. Gulf has been in love with Mew since the first time he met him. Being heartbroken Mew goes drinking with Gulf to forget all his pain but in their drunken state they both end up having sex. Next morning Gulf confess his feelings for Mew but Mew rejects him. Even though he was rejected Gulf wanted to stay close to Mew so he offers Mew to be Colleagues with benefits. Remembering how good it felt having sex with Gulf he agreed to his offer. Now the question is whether Gulf will be able to make Mew fall for him or will Gulf give up after being hurt for so many times. *This story will include mpreg*