<human>: Give me the gist of the text in a nutshell

I have had this issue almost my entire adult life, and even as a teenager when I was dating my first boyfriend. I suffer from very low self-confidence, so I am pretty sure that is the cause of the problem but I have been in therapy for my anxiety, low self-esteem, and other issues for the past 6 months and while it has helped a bit I still get incredibly upset and jealous when another female talks to or comes in contact with my current boyfriend of 3 years. We live together and he is great, he does not give me any reason to worry and he knows of my insecurities and usually makes me feel at-ease and is honest and upfront about things that he knows might bother me. But every so often, he will tell me an ex texted him to see how he is doing or a woman flirted with him at work or something of the sort and I'll get very upset and read into it too much instead of just letting it go like a normal person would and just feel as though he could be taken away from me at any moment. I don't understand why I keep feeling this way, and it makes me so exhausted looking into everything and wondering if he will one day cheat on me with one of these women. Additionally, I know it is hurtful to him too because he genuinely seems hurt that I don't fully trust him. Any advice by someone who has been in this situation on what else I can do besides the therapy I'm currently getting would be greatly appreciated. Thank you.
<bot>: Even after 3 years I still get jealous and upset sometimes when a woman pays attention to my boyfriend, I know it is my own fault and I don't know what to do about it.