Do you think that my ex boyfriend is trying to make me jealous?

we dated for two months and in the beginning of our relationship he mentioned a girl on his facebook and said that she made his ex gf really insecure and jealous because of how pretty she was. he is friends with this girl and slept with her in high-school which was 6-7 years ago. the girl basically looks like a japanese-american version of a barbie. you know the type :straighten their hair, wear the false eyelashes, perfect tan, perfect makeup, designer clothes with matching purses, all the jewlery. shes one of those girls. although i am pretty i am not a barbie im more of a jeans and t-shirt let my hair airdry and wear a little bit of makeup type. my ex was very controlling and always trying to go through my phone and emails and we only hung out on his terms etc. after he brought up that girl in a convo i started several fights about it (3wks ago) because i thought it was odd hed tell me about her. anyways he broke it off with me the other day when i didnt submit to his control...which he usually does to scare me and then calls a few days later but i said "this time im done with you...i took the relationship off of facebook and have not contacted him. then i went onto his page to delete him and saw in the storyline "mitch has written on heather's wall" and he wrote "hey stranger how r u?" heather being the girl he kinda brings up to make me feel insecure in the past. he never writes on anyones wall or makes comments atleast not in the past 3 months. do u think he is doing this to make me jealous?