Melissa Etheridge and Ex-GF — We Hide Our HATRED for the Sake of the Kids

Melissa Etheridge reunited with her ex-GF Tammy Lynn Michaels for a mommy & mommy meal with their 5-year-old twins this week … but afterward, Tammy let the world know they still DESPISE each other.

The gang met up for an overpriced lunch at Jerry”s Deli in Woodland Hills, CA — but when she got home, Tammy tweeted, “Sometimes you gotta plaster a sh*t-eating grin on your face for the sake of the kids.:-)

The former domestic partners are battling it out in court over child custody, visitation, child support, spousal support and attorney”s fees.