text: ex is jealous? how do you know when your ex-boyfriend is jealous?  i am going out with a new boy and now he is all of a sudden starting  to complement me again.  is this jealously or just being friendly?  if its jealously what should i do? what should you do? what do you want to accomplish? do you want to make your ex jealous or did you want to remain friends and feel that if hes jealous, than it could spoil everything? do you want him back in your life, so the new-found interest is welcomed or are you afraid hes going to stalk you and your new guy and the thought is frightening?  the easiest answer is always the most difficult to do, communication. i have a feeling if you think it might be jealousy, it probably is. though, sometimes theres no way to remain friends after a break-up, if you do.. you need to lay it all out on the table. you probably know the best way to handle this situation.