Husband confession

So I've been married for 3years now and my husband has cheated in the past and ive always been insecure ever since but im working on myself so not everything is a bad sign red flag etc. But today I felt triggered by my husband confession to me he told me that in the beginning of our marriage temptations to be with other women was hard for him& I asked what about now and he hesitated to say but said that it still a struggle that he still gets tempted I feel like i want to be supportive because hes not acting on those urges but it hurts that there still there & it adds to my insecurites& i dont want to make a big deal but is this even normal?