There is a big chance that the relationship is rushed as the movie has been clocked at 130 minutes.
I've said this before but I really think it just comes down to expectations.
At this point in time, we've been spoiled. We've had two really successful television shows that had the luxury of week after week storytelling to drag out the love story between Lois and Clark.
Even in the modern comics, it took about 4 years before Clark found the courage to really tell Lois how he felt and they started their relationship relationship in a serious way. The feelings were there from the start but they danced around each other until about 1990 when Clark finally found the courage to tell her how he felt.
This film franchise, if it becomes a trilogy, does not have that luxury. It has about 8 1/2 hours. And that's being generous. That's not even 1/3 of a season of ONE year of Smallville or "Lois and Clark." That's a few issues of a comic. That's it.
I can only speak for me. But right now? I don't want to spend another 6 years watching Lois and Clark fall in love. I JUST DID THAT. And it was WONDERFUL. Tom and Erica brought it for the Lois and Clark love story on Smallville. They were amazing. Their chemistry killed me weekly. Dean and Teri also brought it together but they were stuck with a TV budget. I truly LOVED the week in and week out journey of falling in love. LOVED IT.
But I gotta honest...now? I want to see them TOGETHER. I don't want to wait another 6 years for them to be together. I want to see stories that echo the last 20+ years of comics before the reboot back to the beginning again where they are TOGETHER.
I want to finally see stories done on the big screen with big screen budget with a Lois Lane who knows Clark is Superman and with a Lois and Clark are are firmly committed and together. I want that drama. I have NEVER gotten it in a film franchise. People forget that there were some freaking GOOD dramatic stories told in the comics when Lois and Clark were fully together and their love was out in the open. Their love was put to the test in a DIFFERENT kind of way that you can only explore in a narrative when the love is out in the open. Both before and during the marriage. That's what I want now. I'm so ready for it.
For me, at this point, I'm ok if their journey to being in love is more of an immediate connection that doesn't take a long time. I know this couple like the back of my hand at this point and they have a sort of short hand for me and many other people. After 75 years, I know that these two souls are just waiting to find each other. I, like many other audience members, know what they are going to feel before they feel it. This isn't RAchel Dawes or even Jane and Thor which is foreign to so many movie goers. This is Lois and Clark. We
know them.
So, for me, if they wind up kissing and devoted to each other at the end of the movie...it wont feel "rushed" to me provided it's well written and the acting is good. This is the point I WANT to be at to continue the series.
I've waited years to finally see adventures with Lois and Clark TOGETHER in a Superman film franchise. I wasn't alive back when Superman 2 came out but I know that people back THEN were ready for it because, at the time, the comics had already moved past the Silver Age BS and Lois and Superman were already married on the Earth-2/Superman Family books. Even back THEN, people were ready for the relationship to move forward. I'm ready to see it. I feel like others are ready to see it.
It's all about perspective. I can accept accelerated love for these two people if what they go through together in the movie appears to be as serious, life threatening and emotional as it appears. I can accept that the souls of these 75 year old icons can fall madly in love in this kind of environment.