I feel that your friend might not have completely forgotten about her ex-boyfriend, so she left the words "I love you" in her space. However, this did not mean that she could not accept a new partner. You can have a good talk with her and ask her if her feelings for her ex-boyfriend have been completely cleared. If so, you can consider introducing her to other people. Also, remind your friend that it's best to delete the things in the space in time to avoid unnecessary misunderstandings. I hope my suggestion can help you. If you need more help, you can talk to me anytime.