need some advice..

Senario
---------
I've recently released the female betta together with the male for breeding pusposes and before released I've noticed the below;

- Male made bubble nest
- Male swimming in "S"
- Male dash to female and flares but never attacks
- Female developed vertical stripes
- Female fatter around the abdominal area
- Female puts her head down and kind of wiggles
- Female visits bubble nest and never destroys it

However, when then male touches or rubs agains the female it will sprint away.. I've tried separating them twice however, all the sings that male and female are ready to mate are visible but when they are together the same thing happens..

Question
----------
- Should I permanently separate them?
- Base on the senario, will male and female eventually mate?
- Is it is because a CrownTail (male) and Double tail Plakat (female) can't be breeding partners?

Thanks in advance for your help

---

Added on September 24, 2011, 8:28 pmTank Setup
-------------
- 15 gallon tank (water filled half - 7 inch high - tank height 12 inch)
- Live plants
- Daun ketapang (provided by friend from Setapak - nest made under it)
- Added aquarium salt