Here's the thing, I do enjoy the movie and felt like it was such a bitter love story between Evan and Kayleigh. Do I think they belong together? No, it's quite toxic especially with how it began (Childhood sexual exploitation and abuse is not grounds for forming a deeper love story). However, after rewatching it, I wondered what was Tommy's deal with his hatred for Evan. Is it merely just a brother's overreaction to his sister's lover? Is it the abuse he suffered at the hands of his father (which I assume was not just limited to what we saw in the film based on the implications)? Plus the whole, "finding Jesus" thing that gives his life purpose in the movie, it just made me feel like Tommy had an unrequited crush on Evan. While the ending of the movie implies everyone is better off, I'm not quite sure if Tommy being a closeted gay man repressing his sexuality really is a happy ending for him or the world at large.

Now as for Evan, he's different. On the surface, he's 100% hetero and there's no doubt that he's had many female lovers over his timelines. However, my question is why? He's more sexually active in the timelines when he was sexually exploited alongside Kayleigh, but in a reality without that, he's been portrayed as being alone or with his friend Lenny without a female companion (He should have had developed relations with someone else). I went with the thought that Evan based on the development track with his flashback ability would be asexual, if he were not exposed to hetero experiences. 

So, in this kind of setup, what would happen when an unrequited love and a blank slate interact? A love story of course. 

Of course there's issues, Evan still remembers his time with Kayleigh fondly. He is aligning his thoughts of previous timelines with this current one. Plus, Tommy is disabled in this timeline (mysterious cause, hmm...wonder when will that Chekov gun go off). This story might get dark at times, but it is far nicer and happier than others I've written.

I don't often write love stories, but I enjoy them. I hope folks can enjoy some fluff from me after a dark journey into an alternate 16th century world from Of Pride and Power.