!HELP! GF wants to wait longer for her feelings to get stronger

Me and my girlfriend have been on and off for months now. She is an amazing girl but we got back together recently after going through a breakup that lasted 3-4 weeks and before we broke up we were together for a month. A few days ago she said that she wanted to wait a little longer to date to make sure her feelings are stronger. She means everything to me I love this girl but how do I help make her feelings stronger for me? Thanks -J