talk to your local bails people in the area for tips and ideas. Maybe you can work for them.
Befriend criminals nationwide first. They need your business to make their career everlasting.
Get on with one of your local bail bondsmen, so you can learn the ropes, dangers, precautions, etc.
This is a very risky business and you are adding to the risk by trying to be in business with a boyfriend. He is probably a great guy but relationships can go down the drain so fast and then you have added to your problem.
If you get serious about this, you need to talk with a lawyer about setting up the company so you are protected if the relationship goes sour.
You are also going to need some serious financial assets to get started. This needs to be money you can afford to lose because you are putting up the money to guarantee that a person who has been arrested will show up when the court says to. If the bond is $10,000 and the person puts up $1000 then you get to pay $9000 if he doesn’t show for trial.