Somehow got into Ashara romance?

Hey guys,

I never ever flirted with  Ashara and just put her on influence lvl 50 and be nice to her but NO flirt. Now I just finished all the open conversations, she started kissing me, went into private with me and wanted to marry me? OwO 
I am gay and I dont want her lol. I could just tell her we can not do it now and the conversation ended but am I locked in her romance now or am I still able to marry Theron when I reach the expensions? 
I am worried the game forces me to be in a straight relationship for the rest of my chars life now xD
Cheers for any help!

Karli