First comes love, then comes marriage, then comes Sean and Marcus with a baby carriage? Maybe, though I can't see it, myself. The Sun is touting an Elton John copycat storyline where Marcus and Sean get back together and end up adopting Violet and Sean's son, Dylan. Unless something drastic happens to Vi, it doesn't seem like she'd give up the baby easily. And if something does happen to her, well, haven't we already done a similar storyline with Simon losing his mum and ending up with a reluctant Peter? Ok, that's the difference, in that Sean would be more than happy to take Dylan and raise him.
I think it's more realistic that Sean and Marcus get shared custody and have Dylan part-time but when has the sun of reality shone brightly on Corrie lately? Anyway, it doesn't matter, it will be great to see Marcus back together with Sean, whatever happens with Dylan.