Quickie

So when my boyfriend and I have sex it's always a "quickie". Which is all we have time for sometimes, but on other nights when we have plenty of time to take it slow and really enjoy each other, it still ends up being super fast and not very intimate or romantic. It wasn't always like this, it's just kind of grown to be this way over time. I'd really like to get back to a time when it wasn't a "quickie" every time! If anyone has smart tips I'd really appreciate it! Thanks!