USA - Most Americans haven't made a new friend in 5 years. In fact, the average adult in America has already peaked in popularity, according to new research.

OnePoll and Evite found that 45 percent of adults struggle to make new friends, with 42 of them blaming their struggles on shyness or introversion. 81 percent of those surveyed said lasting friendships are hard to find. The study also found that for many adults, popularity hits its peak at age 23, and for 36 percent, it peaks even before age 21.

The respondents blamed avoiding the bar scene, commitments to family, a lack of hobbies and moving to a new city as major reasons for not meeting friends. Sixty–three percent of respondents said moving away was the most common reason for ending a friendship. Respondents had an average of 16 existing friends, three of which were lifelong friends, five of which they would feel comfortable hanging out with one–on–one and eight that they consider friends, but would not spend time with alone.

Nearly half of the respondents have remained friends with people from high school, and 31 per cent stating they still have friends from college.