Four months is way too soon to feel comfortable with anyone. You are just learning who he is & what he's like & this is not the time to feel comfortable but you should be feeling aware of anything that would nit make this person a good partner especially taking into consideration your 8 year old son it the big picture as its not just about yiy & him but about you, your son & him to be totally aware of all those relationships & that is not something to be relaxed. Beware & be wise before ever getting involved to a deeper level. Relaxation comes with knowing a person. Thst just says you really dont know him.....even a year can be too soon especially if someone is more difficult to get to know. Dont push a feeling that isnt comibg naturally yet & dknt get fully involved until that feeling natirally occurs.