You can be nice to them and be aquantents, but you need a safety net of friends who speak life into you not death. Of course hen your mad you can't be like Nehemiah in the bible and pull their hair, but you can be assured that there are other people out there. Being alone and hurt is so hard, but I find that when I find true friends they met the need because they had that need too. Sometimes you just have to go alone. It's hard. God says to guard our hearts. Noone is perfect, but God. Communication is key. When I was at school I was a loner, but then in college and church I found friends. "He prepares me a table in front of my enemies." "Life and death are in the tongue." Now that I'm out of college I don't have as many friends. People will come in and out of a relationship within times. Not on a bad note, people just are in a different stage in life or just getting married, going to a different church, move away ect. They are lessons and definitely some people are easy to love. It's the hard ones we just pray, but respect ourselves and have boundaries. You don't need people hurting you. You need a safety net. Your core friends. Jesus will always be faithful to you.