How do I say that I find a person or place so good or you love it so much that you think it gives you feeling of closeness to it? Or what? E.g I like my friend's mother so much, it's like motherly vibes come out of her. Or I like a place so much, it gives me homely/comfy feeling, seems like a second home to me. What is this feeling called?
There is no unique term, e.g. from psychology, for feelings like that. There are a few for feelings of unification with the world or entire universe and all creatures in it, but not for deep feelings of closeness and identification with one person or one place. The best you can do is describe the feeling.
Use relationship and/or emotional terms:
"She's like a sister to me".
"My friend's mum is so nice that I feel (like / as though) she's my mother too"
"I love Minneapolis. It's as though I've lived here all my life"
There is a single word to describe such a feeling, and that word is intimacy, and this can be used in reference to a person, or a location.
- a state marked by emotional closeness (the intimacy of old friends)
- a quality suggesting closeness or warmth (the cafe's intimacy)
- something that is very personal or private (They shared little intimacies in their letters.)
However, intimacy (the state of being intimate) is most often used these days to describe physical intimacy, which comes from having a sexual relationship, and one must be careful when using the word to describe a platonic relationship that the listener does not interpret your sentence in this fashion. telling your friend, for example, that you have an intimate relationship with his mother, without further clarification, may not end well.
Is you wish to err on the side of caution , (and most people do), another term might be a safer bet, such as affinity.
affinity: a feeling of closeness and understanding that someone has for another person because of their similar qualities, ideas, or interests
Or, as other comments have suggested, you can simply describe the connection witht is person or place as closeness, or being close.
I have frequently heard the word "nostalgic" being used for some of feelings you describe. However, the dictionary definitions seem to omit the all the 'sweetness' of the feeling.
Nostalgia - (noun) 1. a wistful desire to return in thought or in fact to a former time in one's life, to one's home or homeland, or to one's family and friends; a sentimental yearning for the happiness of a former place or time.
nostalgic - (adjective) 1. experiencing or exhibiting nostalgia, a sentimental or wistful yearning for the happiness felt in a former place, time, or situation.