Will my other kids be jealous?

Rena

I have 8 year old twin boys. It was just the 3 of us for the first 6 years of their lives. (I was a single mom since I was pregnant with them). I met my boyfriend a couple years ago who I love with all my heart and although it took a while for the boys to get used to him, they absolutely love him too now. In 7 days I will have a new baby and I’m afraid that the boys will feel like I don’t love them anymore and that they will be super jealous because they’ve never really had to share me or my attention before.