To be scared to let people in ?

[LemonSherbetFancies]

Without sounding totally weird, does anyone else experience this?
I have had a tough ride of it lately and by chance met another woman my age who has 2 grandsons. It was a chance meeting where we got chatting. The coincidences in our lives are truly astonishing. Would be outing to say what but it is very rare to meet someone who shares so much of my life circumstances. We have become friendly very quickly. I don't live with my DP and although I have an adult DD living with me, I do get lonely.
I feel this family have become so much a part of my own now. The children send me notes saying how much they adore me and it's all just lovely. Yet I feel a constant worry about letting them all into my heart. Does anyone else get like this or am I just being ridiculous?

I'd be wary.
It sounds a bit strange.
How do you know this woman isn't lying about the life events and trying to get close for some other reason?
The notes sound strange.
What do they want from you?

No it's nothing like that. I am not asking if I think they are sinister or anything like that. I think I just feel worried to let them in as I feel if it all falls apart, it will really hurt. I feel like this often when getting close to people.
She definitely isn't lying about the life events as she mentioned it first. The children are just very loving and I am already very fond of them.