Thanks for your reply! I meant that my load has to be placed on the other side, connecting to m2 and I was thinking that the return path through m2 would then pass a small current through the load constantly even when the mosfets are off?

Why does your load have to be connected to the other side?
It makes no difference on which side the load is connected as far as the load is concerned.

 

The IRLZ44N ON resistance, as stated in the data sheet, is not specified below a Vgs of 4V.

No, but the MOSFET bias will be incorrect.
Notice that the bridge rectifiers clamp the negative AC voltage to ground, which fouls up the MOSFET bias.
As shown below this means the M2 will conduct through its body diode for the negative half of the sinewave even when the gate voltage is zero.

View attachment 118406

Hmm, thanks alot @crutschow, you've been extremely helpful!
I really need to learn LT spice.. tried simulating your first circuit but it complained about missing 1n4002, guess I need to find some component libraries somewhere first..

 

The IRLZ44N ON resistance, as stated in the data sheet, is not specified below a Vgs of 4V.
View attachment 118406

Using the examples given in the datasheet for IRLZ44N for ON resistance with a exponential curve fit gives a ON resistance of about 0.059Ω at 3.3V which is still very low and certainly low enough for my dimmer application. Thanks for the heads-up!
https://mycurvefit.com/share/0bb9a8d1-a713-47b6-9c1a-2cdd44fd4441

 

tried simulating your first circuit but it complained about missing 1n4002, guess I need to find some component libraries somewhere first

Yes, I've added some libraries for some common devices that aren't in the standard LTspice library, but you can use other similar diodes in the library to do the simulation without a significant effect on the results.