So she is on her cycle what is the best way to deal ??

As man we have various thoughts when our woman is on her cycle...
We either:
- stay away and act like she has a contagious disease.

- act like a freak and still want to hit it during her cycle
Women shouldn't assume their partner will be grossed out by their period. In fact, it's often the person who's menstruating who puts a stop to sex, not her other half. Every couple is different, and some people will be more open to it than others. If you're curious what your partner might think, however, don't spring it on him or her in the heat of the moment—bring it up before things get hot and heavy. Good communication can lead to great sex at any time during the month.

- or pamper her with some TLC.
As an old school dude I have been through all of the above scenes..
the one that worked best for me was this last one. Pampering your woman with TLC.... yes it takes planning and proper execution. Here are a few pointers. always offer to cook her meals especially when she is in pain , make a list of her favorites... and then fix them one after the other so that she know you are putting in work... Offer to rub her feet and don't have sex on your mind when you are doing it. And most important  keep a heating pad handy. stock up, just in case, on Midol.
5  good tips  designed to help you interact more intimately and lovingly with your partner.

4. No joking while she’s experiencing discomfort: It’s OK to make her laugh, laughter is good medicine
5. Know her cycle: Ask her about the timing of her cycle, (though not when she is actually menstruating). If you can get a general idea of when she is ovulating or bleeding, you can more skillfully interact with her. By knowing her cycle, you can be more aware and sensitive to her changing moods and physical discomfort. This develops a deeper trust as your woman knows you are really present with what she is experiencing. Put it in your calendar so you have a heads up.

3. Her changing libido: When premenstrual, her hormone level shifts. This hormonal flip can mean “she isn’t horny for you!” Interestingly, having an orgasm can relieve menstrual cramps, though your attitude during the whole cycle will determine whether or not she’s willing to explore this. Again , this is probably best to bring up when she isn’t in the middle of it.
6.  BUT do not joke about it being “that time of the month again”. Rather than understanding her, you are actually shaming and judging her. She may close down to you, creating a disconnect in your relationship. No rude comments about what’s in the trash bin, about her being moody… no jokes, no nothing.
7. Don’t run away from her emotions; Many women like more space with menstruating but its best to take cues from her. Don’t just run off to the bar with the guys believing that’s best. If she wants you to leave, she will most likely ask for space. She may act like she doesn’t want you there, but remember she may actually desire some TLC. Your full presence is the best medicine. She will love you for this!

5. Don’t try to fix her; The first thing I do is get my woman a hot water bottle. She LOVES this. other great ideas include; complimenting her, being kind, helping out with chores (this should always be the case, but usually isn’t). Help create a cozy environment for her, and cook her comfort food. Hugs are also great. Its always amazing what a lavender lotion foot rub can do. The main thing is to not be an ass. (closing down and or not wanting to deal is being an ass) I know from experience that this doesn’t earn many points. Chocolate helps to stimulate serotonin, that can be a good move.