Feeling Some Type Of Way

My boyfriend and I were looking at something on my phone and one of my connections from LinkedIn sent “I miss you too” i am not sure why he sent it and i didn’t have an answer for my boyfriend. It did not help that my connection was a male and he had put too. He now thinks I miss another man and he is upset, and probably thinks I cheated. I am not sure what to do. He still wants to be together ( we been together for nine years) but I feel like he does not trust me anymore and it’s not a good feeling. I’m so sad.