Boyfriend is thinking about converting to a different religion 😢

So my boyfriend was very into God last year. He believed in him, he prayed and read the Bible and he use to talk about him all the time. I am a Christian too. Now he is thinking about changing his religion to Islam. To be honest y’all it kinda hurts because I liked him talking about God and stuff. Idk of its his friend that’s influencing him or what. He wanted to get baptized and he wanted to learn how to speak in tongues an everything and now all of that changed this year. He started getting close to God about a couple years ago because he was hospitalized for a while. If he does I’m scared of what people are going to think. But I’m also thinking about me.. like future kids, what if we go through something an I or we need God baby our side to help us through it. It does hurt about how he just wants to do it or thinking about doing it. He is reading stuff about Islam and he said he is liking the stuff. 😢😢