Feeling of missing someone [duplicate]

What’s that word that describes the feeling when something you see/hear/smell reminds you of someone? For example if you go to the park and you see the place where you had a first kiss with someone and that place makes you miss that person? It isn’t something that you do voluntarily, it’s more like a thing that pops out in your head and you can’t get it out. (I remember my English teacher talking about it I just don’t know what it is)

“I went to the park today and that bench triggered my ____”

Solution 1:

"reminiscence" comes close perhaps.

Solution 2:

"nostalgia" may be the word you want:

nostalgia: a feeling that a time in the past was good, or the activity of remembering a good time in the past and wishing that things had not changed