How would you describe your ability to say "I love you" to:
1) Family members
It depends. I find that the younger or older the family member, 'I love you's' come the easiest. I say and get 'I love yous' from my nieces almost every time I see them. Even though they're young, I don't take it as lip-service. I think they really mean it from the bottoms of their little hearts. The same with my grandma. Every time I talk to her, I make sure to let her know I love her. I don't ever want to live with the knowledge that I didn't take the opportunity to let her know how I feel in the last conversation we had before she passed away.
As for my immediate family, uh, we don't say it often, but it's implied. By comparison, my parents are much more affectionate with me than my siblings. I'm hard pressed to say that I've told either of my brothers that I've loved them in the last five years. Both of them are much older than I am and we rarely speak enough as it is. Open affection has always been awkward with them, given the age gap.
My best friend is in the habit of saying this more often than I do. We've known each other for all our lives and grew up practically like sisters. We aren't opposed to cuddling and expressing physical affection like hand holding or hugs, but even though I do care for her deeply, I find it rather awkward to express sometimes. Especially if she mentions it to me on the fly over the phone or when we're sitting and talking on the couch. I know she means it, and I mean it when I say it back, but it doesn't feel very natural for me to say aloud.
My other best friend is my ex, which goes without saying that simply saying 'I love you' comes with some pretty hefty baggage. We both care for each other very much, but we express our affection and the nature of our close relationship in other ways. For instance, we'll casually talk about how special our friendship is (given our history) and how well we know each other, but those three little words are never spoken aloud.
3) SOs, in the beginning of a relationship
Oh goodness, no. Never. It makes me nervous when people tell me they love me so soon. I believe that love takes time to grow, and even if I feel deep affection for my new SO, I don't take it for more than infatuation at this point. I would be very careful about saying ' I love you' and meaning it at the beginning of a new relationship.
4) SOs, after the relationship has matured
If our relationship is an affectionate one, I express it often and openly.
5) People you don't truly love? (this may seem like a weird one, but there are people out there that throw "I love you" around a little more than they should IMH
I can differentiate between a jokey "OMG, I love you for this!" and an actual "I love you"; I'm capable of reading social cues. I don't find it the least bit uncomfortable or even over-used. Like anything, it is dependent on its context and the person saying it. Some people are just more open and liberal with their expression; I don't judge or assume that they don't know what love is supposed to be or feel like.
On the other hand, if it's someone I don't love telling me that they love me sincerely, well, I'm one of those awkward people that will just say "thanks"... and then try to clumsily smooth it out by saying that I care about them too, or explain a trait that I admire (if that's true), but I would be very careful not to imply that I share their feelings.
Finally, how would saying "I love you" compare in terms of feeling cognitive functions (Fe vs Fi)?
An 'I love you' expressed in terms of Fe would probably come at a time when the other person had initiated it first or when social convention expects it, such as giving comfort or exchanging goodbyes or well-wishes. It's not that its meant to be insincere, but it's expression is framed within the parameters of social customs.
An "I love you" expressed in terms of Fi is more of a fly-by-the-seat-of-cupid's-diaper kind of deal, where you say it because the moment is right and you truly feel it at the time.
Interesting idea for a thread!