<human>: I met my partner about a year ago, we dated casually for about two months until he told me he wasn't ready for a relationship and was hung up on his ex (they officially broke up two weeks before meeting me, after being together for two years). 

We went our separate ways with regretfully, the occasional hook up. I ended up telling him we had to cut contact because I liked him too much and couldn't just casually sleep with him. He told me he really liked me but was confused etc. Ended up not talking for around a month and a half. 

Then he got in touch again, almost begging for me to be back in his life just as friends. I agreed and we ended up in a relationship. Things are great and he is attentive, loving, caring and I can feel he is just crazy about me. I have met his close friends and family. We also make future plans together and are very close. We have been going strong for around 6-7 months now. I found out the reason we stopped dating at the beginning was because his ex got back in touch with them and they began talking again so he dropped me.

Whilst we were on a weekend break together, we found out some distressing news involving an accident that killed a couple of people and injured a few. His ex used to work in the place the accident happened and they both knew people involved in it. He emailed her asking if she was okay and any news on the people involved. She replied thanking him for caring and gave him an update (he was very honest about this contact). 

I feel so selfish and stupid for saying this but... I am terrified they will bond over this tragedy and reignite an old flame. It has only been a year and a bit since they broke up. I understand she has a boyfriend now but last time they got in contact he went after her again. Should I tell him I feel insecure?

Can you give me the gist of the text in a nutshell?
<bot>: Boyfriend wasn't over his ex when he met me and we ended things due to it. Got back together after time apart. Recent tragedy involving loss of life involves them both and I'm scared they will reunite.