If your frenulum tears, the first thing to do is keep it clean and let it heal. Rinse the wound with clean water and avoid playing with it. Then you must ask yourself how you tore your frenulum.

If you are intact and your frenulum is short, you may have frenulum breve. There are simple ways to correct frenulum breve that do not involve circumcision. 

If your frenulum is not too short, did you tear it from having rough sex? The end of the penis is mucous membrane, which is much thinner than the skin on the shaft. An example of rough sex is dry masturbation for a circumcised man. Dry masturbation can unduly stress that thin tissue and cause abrasions or even tears. If rough sex is the cause, you must decide if it is worth it.

If you are restoring your foreskin and your frenulum remnant tore, then you need to change how you are tugging. If you are using a device, you may need a frenulum notch. For example, the DTR and TLC-X pusher plates can be notched to provide clearance for your frenulum remnant. Contact your restoring device vendor for more information.

If you continue to tear your frenulum, I suggest seeing a doctor (probably a urologist would be best).

Hope this helps.