Need to sexually active. Girl, pls help!

I have girl frd, we were together since 10 years, we can not marry with eachother due to my family issue,somehow she managed these and we both married to other partners,after that we also continued with our relationship and was sexually active, she born my baby also. Due to some problems i was not able to go on his father's death. on that time his husband was there and with her family.she thought i was not with her when she really needs me.i was thinking that if husband see me he will create problem coz he has doubt on us. This was happened in 2018, since then we are meeting regularly on weekends, but now she is refusing to do sex with me, she is saying she lived her life because of his father's incident he is not able to do sex with me,I love her too much,i am not interested to do sex with anyone, i tried to do sex with other but every time her face is coming to my mind Now since last two years i am doing masturbation with our past memory,i am not able to do sex with any girl,pls help