The Fi/Te couples I know:
The partner does not like to meet friends. He "needs" one person and prefers not to got to parties and the like. The partner tells the "that person is bad for you, don't meet him, don't trust him. We should be alone all the time" etc. The tries to isolate the from friends and likes to control him. Speaking on logic, the partner does not like (or just can't) to analyze things and prefers to believe what the partner says. If the relationship between them gets worse, anything the partner said becomes "wrong".
The Fe/Ti couples I know:
The partner likes to impose his "worldview" to the partner. He says "I know how things work. Listen to me, not to them. They are clueless". They like to go to parties, mingle, drink beer, etc as being "alone" is boring (threesomes are welcome ).
So people try to minimize the amount of time their "non-valued" functions are present. ()
When situations make you use your polr, I usually "succeed". It is just I dislike it. In my case, I am supposed to be polite, restrained, etc (whilst I prefer a style of communication, with jokes and group conversations). When facing activities, on the contrary, I prefer not to participate. people, for instance, label nerds as "creepy, geeks" etc.
In nightclubs, / people like to dance all the time (gammas prefer to dance with another person, betas constantly exchange partners . In / nightclubs, people talk to each other (deltas prefer one on one conversations and alphas group conversations)