@imgoingcrazy,
Hello,
Firstly, please ignore the lack of empathy of the other posters. For the previous posters : children do need a lot of attention - They don't need exclusive attention.
It may be that this child is the one way he has to remember his ex by. Everyone grieves differently, and if this is an outlet for grief (or loving memory), this is one of those area's you are unfortunatelygoing to have to deal with delicately - for he has every right to grieve for as long as he feels grief, or a connection to her.
That said, you have every right to have your emotional
needs fulfilled. You emotions are honest, though realise (as a generic statement) that many emotions are often misplaced (being felt for erroneous reasons, because the stories we tell ourselves lack true knowledge of the others motivations or intentions, or because we don't understand our fears or needs, or other reasons to - subject in itself).
It may be as the other say, that what you are feeling lacks maturity, or it may be that you haven't quite explained what is happening at home in a way that others comprehend. In any event, all emotions people feel are honest emotions.
Have you sat down with your boyfriend and talked about this? (rather than drop hints, no matter how numerous)