For ladies, Direct Officer and & 7 killings indicate your boyfriend or husband. You can check it from your chart.
Matching using Bazi is very common during ancient China era but modern day in this complicated world especially in term of human love life it will not promise 100% or even 80% good for sure. As long as the guy is a "Good" man, no extra-ordinary bad habit likes gambling, flirting and etc, overall it will be alright. Of course some still want to do Bazi matching it will add extra points to your marriage.
Cheers.