<human>: Can you summarize the given text in a few sentences?

I've been dating my girlfriend (20/F) for about five months. Our relationship is adequate to good, but I'm beginning to become concerned that I don't feel my admiration (or love?) for her growing over time. I definitely like her. I like talking to her, hanging out, being around her, and such. However, its a feeling that I've more associated with an intense or close friendship rather than a relationship. 

It may be irrelevant, but I'll mention it anyway. Neither of us is very experienced at dating. This is only my third relationship and the other two were relatively short lived. This is her first. Our relationship isn't very physical; we mostly stick to hugs, kisses, and the occasional making out. Its *nice*, but I'm not particularly excited about the lack of physical contact, but I understand her desire to take it slow with her first relationship and I'm willing to tolerate it for an indeterminate amount of time.

In closing, to the redditors that have more dating experience or who have been in a similar situation, is this a normal feeling? How long does it normally take to develop strong feelings for your SO? How do you know when your feeling of affection becomes love?
<bot>: It has been 5 months in my relationship and I don't feel any stronger forms of affection for my girlfriend. Is this normal?