Is my partner haunting me or am I just going crazy?

My partner died four months ago and I haven't been dealing with it very well, but I won't go into that again. Lately however I've been sensing a presence in my house. And it isn't limited to the night either. I have started to hear him and to catch a whiff of his scent at random times during the day. Once I even felt his hand on my shoulder. And none of this makes me afraid. Lately I've been thinking some strange things..well they would have seemed strange once but now, they seem to make quite a lot of sense. If he is haunting me, then there must be some sort of after life where I could be with him again. I guess there's only one way to go there. If I was certain, I'd take that path in a second.