Why would and ex start flirting and such now with you again and state have a strong friendship what is the meaning and or is there a hidden agenda?

Anonymous
Ex boyfriend out of the blue started texting me and has texted me every day for the past four days. Our convo is very interesting there is flirting, and compliments, and questions and answer some with a sexual intention and answers. It is very confusing since we broke up
He ended it not me almost a year ago. He states our friendship is strong but the sexual stuff added in makes me feel that there is more his is not telling me. In addition there was talk about spending the night on my couch or sharing a bed when he comes through my way. It is confusing but I do not dare ask what his intentions are and or where we are going with this.
Why would and ex start flirting and such now with you again and state have a strong friendship what is the meaning and or is there a hidden agenda?
4 Opinion