Muslim men are very passionate about their beliefs and their traditions and many people will see this as a highly attractive quality.
However it does also mean that you are taking on both the man and his values and while you don't necessarily have to agree with them (the Muslim faith does not discriminate between religions), you will have to make sure that you are happy making compromises and comfortable with your partner's views just as in any inter-religion relationship.
In short, mid-life crises come early and hit harder for non-practicing Muslim men.
I have seen this play out so many times in my own family and community that it no longer surprises me.
When looked at closely, it can be seen that there are some polytheistic elements within faiths of the People of the Scripture, at least in some of them; they think that some created people like Jesus and Mary have some features special to Allah and worship them.