Maybe you don't need to move on as such, it may be that thinking you should "move on" is stopping you being satisfied with staying where you are with your life. You're surviving, right? Eating, sleeping, keeping house? So tell yourself you can stay right where you are, as a grieving widow, still missing her husband, but into that mix you can add a little more company as that seems to be something you do know you want. I don't know how old you are or how mobile you are, but you can join your local befriending service for elderly housebound people as a volunteer, which will give you regular contact with one or more other people. Or, if you're not up to that, you could join as a recipient of the befriending!