this one is not easy. i hope someone pitches in. you are Venus. you are retrograde, but dignified in the 2nd house. he is Mars in the 5th. children--> Sun in the 1st (exalted in 1st). well the Mars in the 5th shows you want children with him, and this is being even more evident by Sun being in 1st.
well unfortunately the main significators are not applying. the Sun is ruled by you(Venus). the Mars(him) ruled by Mercury. since Virgo is intercepted in the 5th, Mercury *could* also signify children. Mercury is seperating from Mars. does he want children? i'm not sure if i'm reading right. it seems you might not yet discussed children with him? since Mercury is also ruled by you(Venus) it's implying you are the one who definitely wants children with him.
however the Moon in Aries is ruled by Mars(him). that could show that he indeed is considering the idea of having kids with you. but the Moon is not applying to any significators.
i apologize if i read this in-correctly. i'm not gonna give a yes/no since i'm not sure. (just learning)
*edit* btw did you ask this question 2 months ago? i thought it was interesting that the question was asked on the 16th of May and you posted it on the 16th of July? coincidence or a mistake? lol