Hey! So happy to read of a lovely relationship :-)

So my thoughts are to be romantic! Sweep her off her feet, be thoughtful, be unpredictable (in a good way) so its exciting. Think of things she really loves and surprise her. It doesnt have to cost much, romantic picnics, go places, do things together that are just simply fun. Send her cards in the post, cook her a dinner, massage. Anything that makes her feel good and you'll enjoy doing too. I know my own relationship is quite stale, bogged down by day to day stuff and I would love the odd surprise and effort from my partner :-) Good luck & have fun!