Her secret? Her secret? She said "I believe in second chances, but I don't believe in third or fourth chances. I love talking through things and always want to make things work if I really love someone. But if they can't fix whatever is wrong, they're probably not going to change for anybody. You can't change a person, so sometimes you have to move on."
She may have been talking about romantic relationships, but this could definitely apply to friendships too.
But how do you just move on? It can be really hard sometimes. Selena admitted, "When I went through my first breakup, I thought it was the end of the world."
"I cried it out, screamed, and called my friends in the middle of the night. But that's okay, you have to let it be painful and get through it. Just remember that every day gets better."
Do you think Selena gives good advice?
A miscarriage means something went wrong with Mandy's pregnancy and she lost the baby. Selena had officially announced she was going to be a big sister just three weeks earlier.
Sel found out the awful news while she attending a concert in L.A., and immediately left to go home. She canceled some of her upcoming concerts too.
Demi immediately sent a tweet to Selena saying "I love you." Selena's going to need friends like Demi to get her through this tough time.
Let's hope Selena and her family make it through this difficult time.