Late night tequila induced questions

K so set the record straight I had a couple3. So I'm gay, I got a loving boyfriend and all that yadda yadda. So is there actually a gay gene, kind a been questioning what made me, me like I know it's not a choice and stuff but like am I the result of a gay gene? Or am I combination of environmental factors with a genetic aspect to things. Also thank god for autocorrects otherwise this would be impossible to read.Drunk and questioning stuffs - halp pls :)!@!!