Here's a revised version of your text in proper English:
"I had a friend named Mash, but he is no longer my friend. He was a source of problems in our relationship, and it wasn't just him. When Donny passed away, I reached out to Mash to see how he was doing. He answered and began telling me how unwell he was feeling. At the end of our conversation, he said he loved me. I replied with, 'I love you too, and please don't do anything that might hurt us. I know you've been through a lot and continue to face challenges, and it will take time for you to heal. I sincerely hope you can take care of yourself. I will check in on you, but I believe it's best for me to stop texting for now so you can focus on your healing.'"