State of Texas - Sale of vehicle with lost title?

I am selling a vehicle to a neighbor and found that the title was not in the spot where I would usually keep such things.

I am wondering if I have to get a copy of the title re-issued in my name before I can transfer it or if I can just fill out one of those notification of vehicle sale forms and he can get the title re-issued in his name rather than having go through a two step title transfer process.