1) Play hard to get
I played a game whilst I was single and dating just as an experiment. I tested how stand-offish I could be with a guy before he lost interest. This included telling them I was busy all of the time, not returning phonecalls, backing out of dates, turning dates down, not giving reasons for where or whom I'd been with blah blah oh and worse things too. The truth was, the worse I treat them, the more they came back for more and more and more.
2) Don't say 'I love you too' everytime. Try saying 'ah, I know you do, that's so nice to hear'. Pretty quickly they catch on that you're not saying it back and then they ask... You can choose what to say, you can even say 'I love you too' but the fact that you didn't say it straight back, gives them a nudge if they are taking you for-granted.
3) I always have my own time, it can be hobbies or just reading, watching a program or being with other friends. This keeps you in their mind because you are busy!
4) Be nice and don't whine. Do not say these fatal words like 'spend more time with me'. If you say this, it's begging! You are the woman, he is the man. He chases you so if you chase him, that makes you beneath him when really you should be his prize.
Look, I could go on but have a think to yourself... If you are confused about what to do, make a decision in your head to just do what he does - if he goes out one night, you go out at the same time or another time... Try not seeing him and he will be phoning you and arranging time.
This works, I've tried and tested it and so have people I've advised to the point where I know to the minute when a guy will call or show up...
Good luck girls and remember, you are a prize worth winning and men love a challenge.