Sounds to me like he’s the gutless one, not her.

Like PaulC and Dee8go stated. If you feel you own him, give him a chord for two days. That’s it. Otherwise he’ll sponge off you just like his mom.
What put it in your lap? Did he come over and mention your plugging into his house for two days? If so, say sure. Two days for two days.
And as SirNick mentioned, talk to the mom if you can. If it’s her house let her know what your doing and why. I’m sure she will agree with us here. Two days and that’s it.
After that, take Hatts stand with the bum.

Sounds like he could use a wakeup call.

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1980 300D - Veggie Burner !