Friendship and money don’t mix, a new survey suggests.

More than 1 in 3 Americans have lost friends over money, according to a summer report from the personal finance site LendingTree.

Of the 2,000 adults surveyed, 36% said they had lost a friendship over money. Two-fifths reported tension with friends over money. And nearly one-third felt pressure to keep up with friends' spending habits.

None of that tension, though, seems to stop Americans from mixing money and friendship. In the LendingTree survey, 77% of respondents said they had lent money to friends. One-third of lenders didn’t get the money back.

"Money is complicated, and it is emotional," said Traci Williams, a clinical psychologist and certified financial therapist based in Atlanta. "And our friendships are some of our closest relationships in the world, so it’s not surprising that the two can become intermingled and complicated."