The little things matter. It's more important than anything else. It may seem trivial but don't underestimate the impact it has.
While it's easier, perhaps to some, better, to be the practical person, there's no harm in letting your guards down once in a while. Be romantic in your relationship. Don't let the passion dies down and leave it to practicality.
Tell the girl she's beautiful. Tell the guy he's so handsome he makes you go weak in the knees. It may seem silly but hey, what have you got to lose? If you don't do it then believe me, someone else will. How confident are you that it's not already happening?
Let's be realistic. Trust alone isn't enough in this world we now live in. One needs something to look forward to in an otherwise mundane life.
A few years down the line, she's not going to look back and reflect on the time you changed her car tire. She's going to look back and smile at the memory of you filling the room with pink balloons and flower petals.
Flattery, appreciation, acknowledgement, spontaneity, and every little thing in between. It comes a long way. People often forget that. It's human nature to take things for granted until it is gone.
While you may argue that these things can't build a relationship to last, remember that passion & excitement will keep it afloat. When you let all that fade away, do you think your pragmatic ways will be enough? Yeah, maybe, if something monotonous is alright with you.
Reflect a little. What have you got to lose? Go big or go home right?