breaking up?

im dating this guy and i really like him, he makes me happy and shi like when im around him, its a whole nother lvl of happiness tht i only get around him. but theres been stuff in our relationship where he's made me have doubts before, such as intentionally making me jealous etc. and ive told him how itd made me feel such as, making me feel mentally/emotionally exhausted and he'd apologise but wouldnt change. Recently my friends have been telling me to break up cos the relationship is toxic? but idk.