help with my ex

ok guys so I'm talking to my ex right and I asked him a question and he responds with when or if we get married I can tell you keep in mind we have not seen or talk to each other for almost 4 months then I told him that my kids would be cuter then his and he tell my what if there our kids but wait plot twist the day after I woke up to him kissing my cheek and watching me sleep he gose on and tell me he wants to be friends rn and then he said idk if we would ever work out can some one please tell me what to do we talk all the time we are fwb and idk what to do