Not exactly guilt as much as distrust a lot of the time. That they loved my Mum and it's because they think they see my Mum in me that they love me. (She died over 40 years ago.)
Also, that it's an emotion that varies in strength. People often seem to feel/ express love when they are fearful and in need of support. Especially if their usual sources are taken away- even briefly. eg. Their partner is away. I get tired of being needed and then dropped when someone better comes along.
I tend to get more emotional when I feel people love me. If someone hugs me tightly, chances are, I'll cry. I tend to associate love with loss because a lot of the people I've loved, I've lost. I also feel bad because- if they do love me, maybe they will feel a similar loss if I do CTB.
I'm very isolated though so, I don't tend to experience it so much now.