“oml” Text Meaning

"On my life" — emphasis of sincerity, similar to ong.

When a guy uses "oml", read it at face value first. Most guys use slang exactly as the group chat uses it. The only real signal is whether he bothers texting you at all — effort is the male tell, not vocabulary.

When a girl uses "oml", take the dictionary meaning, then watch the pattern. Consistent, easy slang with you signals comfort; slang that appears to match your style is mirroring — a quiet sign of interest.

Match the energy and keep the exchange moving. Slang is casual by design, so a casual, quick reply fits better than a formal one.