How I think the 141 would be in a relationship:
Ghost: he'd definitely be the quiet type. Over time, he'd slowly start to open up more and speak about his feelings rather than just sarcastic one liners. He'd still let his partner do all the talking for him at parties and such. Only ever really open with his partner. Dates consisted of mostly staying at home, eating dinner and talking. He's a surprisingly decent cook.
Soap: Soap tries to be a good boyfriend. He uses his charm and humor to get his partner to fall for him, but once the relationship actually gets serious he's fuckin clueless. Pretty awkward with making advances or communicating with his partner but once the awkwardness is gone and they're more comfortable with each other he's a real loving man.
Price: he's the definition of protective. He is caring and funny and loves making his partner laugh, but if anyone flirts with them or even touches them, he'll swoop right in and steal his partner back. He loves spoiling his love (even though they ask him not to). He'd get them a gorgeous necklace just for their half birthday. And yes, his partner is the only one allowed to touch his hat. He thinks they look cute in it.
Gaz: Gaz is the epitome of a romantic. He shows up dressed stunningly, no wrinkles in sight and hair combed perfectly for just the first date. Opening doors for his partner, buying flowers for no occasion, sneaking little gifts in their desk or clothes. He puts his partner above everything else. Dates are always fancy (or casual) dinners, cute picnics, stargazing, going to lookout points. Gaz is a romantic.