When it comes to relating naturally as a romantic couple, this aspect could make it difficult or even impossible. You try to control your lover's behavior, both in private and in public. After a while, they no longer feel free to just lean over and give you a kiss, because you give them a look to let them know you're not okay with public displays of affection.
When you're together, they feel restricted, sober, rigid and inhibited, as if there are outside forces pushing in on them, making them behave in a certain way. Your romantic expression toward them is definitely cool. The problem is that you want to stay in control at all times, which, of course, is both impossible and no fun, especially when you're fooling around together. Why would you want to maintain such control? The answer probably lies in some past relationships that set up a dynamic for you that you're now living out through this person. The other question is, if your partner stays, why should they put up with it? Again, the answer lies in their past relationships, what they experienced before and what they're going to live out again through this one. You automatically set up a dynamic together that sets you as the superior and them as the inferior partner. You're equals, and you should exist as such in your romantic relationship. Where's the romance in trying to control each other and yourselves all the time? If this relationship is long-term, facing this problem and getting through it is essential.