How Can I Make My Relationship With My Girlfriend Really Interesting?

Keep it romantic. This can be as simple as writing her a note before you leave for work, telling her that you are thinking about her.

You could also suprise her with an in-expensive gift such as a single flower. Find out  what she likes and then learn more about those things on your own so that you can talk intelligently with her about them.

Hold her and keep her close. Hold her hand. Touch her when you see her. Keep lots of contact with her without being overbearing and smothery. This will let her know you are interested in her.

When you are with your friends, make sure that you pay attention to her and keep her just as important in the conversation as you do your buddies.

Make time to get away alone, even if for just a few hours. Make her know how much you like to spend time with her. Tell her about her qualities without suckign up to her.

Find out what turns her on then work on it. My girl likes to be kissed on the back of the neck. So, when we're together and it's appropriate in the setting I will kiss her there. That way it let's her know that I remeber what she likes.

The bottom line is to treat her with the little nuonces that you like. She has them too....so do it.

Be spontaneous and romantic. Do things that she would never expect. Always make sure she comes first. Call her up just to say..."Honey, i was thinkin about u".....Send her little sweet text messages....Send her flowers...Write her love poems...That's keeping it interesting...Trust, me she'll love u for that.

To make a relationship really interesting you need to have wide range of interesting things to do.
Apart from the physical side of a realtionship there are so many other things that can make realtionships interesting.
Think about what sort of things you both like doing, start at the basics like do you both enjoy books, films, walks in the countryside, visiting the seaside, dancing, drives out, good food, going to the pub, theatre - the possiblities are endless.
You could plan regular treats that you both enjoy and make the planning alot of fun. It depends on how much you can afford but can you take up some activities and hobbies you can both enjoy.
You could decide on something totally new for you both that would be a challenge and exciting too, it would give you a common interest straight away.
If you both want something new to have a go at why not paln a different sort of adventure holiday, there are plenty on offer.