Would you date or marry your brother or sister’s EX?

My husband was my older sister’s EX. They didn’t date for long, only for like 6 month. My husband likes my sister a lot, but my sister likes another guy. I got to know my husband while he was dating my sister. After 6 month, my sister moved on to date the guy that she likes and they got married within couple months. My husband (my sister’s EX) and I started dating and got married. My sister got divorced. I feel like my husband still have feelings for my sister and my sister still have feelings for him.

Would you date or marry your brother or sister’s EX?
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