Can attorney represent us both in divorce?

In a word, no.  

Your spouse's (or other parent's) attorney is honor-bound to advocate for his or her client--and that's not you. Family law cases are inherently adversarial matters, meaning that an attorney cannot represent both sides.  Even if you and your spouse (or the other parent) are amicable, you owe it to yourself to have someone look out for you--just like the other side does.