after seeking the advice of his friends in walford, colin decides to play things cool with guido, by not actively chasing him and instead becoming the chased. the plan works and it isn't long before guido has invited himself back to colin's to spend the night. soon after, guido splits with his boyfriend and moves in with colin. colin has been scarred by past relationships, so he is adamant that he is not going to be used by guido as a mere stop gap. he wants assurances that the relationship has a future and he begins to demand more commitment from guido. guido on the other hand, is far more relaxed and wants to take the relationship one stage at a time. petty arguments erupt between the pair, instigated by colin, whose demeanour is constantly changing from mild-mannered to belligerent, for no apparent reason. guido is left bemused by this, but eventually colin divulges that he is suffering from poor health and the worry is having a negative effect on his behaviour. guido manages to persuade colin to get a check up, after which it is revealed that he has been suffering from the early symptoms of multiple sclerosis.